Home / 90,877.60-136,316.40-61,386.40

Finding the Fourth Proportional to 90,877.60, 136,316.40 and 61,386.40

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Solution

The fourth proportional to 90,877.60, 136,316.40 and 61,386.40 is: 92,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,877.60 : 136,316.40 = 61,386.40 : x
  2. Step 2: Convert to fraction form
    90,877.60/136,316.40 = 61,386.40/x
  3. Step 3: Cross multiply
    90,877.60x = 136,316.40 × 61,386.40
  4. Step 4: Simplify right side
    90,877.60x = 8,367,973,056.96
  5. Step 5: Solve for x
    x = 8,367,973,056.96/90,877.60
  6. Step 6: Final answer
    x = 92,079.60

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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.