Home / 90,731,541,931.60-136,097,312,897.40-78,323,882,616.40

Finding the Fourth Proportional to 90,731,541,931.60, 136,097,312,897.40 and 78,323,882,616.40

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Solution

The fourth proportional to 90,731,541,931.60, 136,097,312,897.40 and 78,323,882,616.40 is: 117,485,823,924.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,731,541,931.60 : 136,097,312,897.40 = 78,323,882,616.40 : x
  2. Step 2: Convert to fraction form
    90,731,541,931.60/136,097,312,897.40 = 78,323,882,616.40/x
  3. Step 3: Cross multiply
    90,731,541,931.60x = 136,097,312,897.40 × 78,323,882,616.40
  4. Step 4: Simplify right side
    90,731,541,931.60x = 10,659,669,959,783,418,429,440
  5. Step 5: Solve for x
    x = 10,659,669,959,783,418,429,440/90,731,541,931.60
  6. Step 6: Final answer
    x = 117,485,823,924.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.