Home / 90,640,282.60-135,960,423.90-78,310,851.40

Finding the Fourth Proportional to 90,640,282.60, 135,960,423.90 and 78,310,851.40

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Solution

The fourth proportional to 90,640,282.60, 135,960,423.90 and 78,310,851.40 is: 117,466,277.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,640,282.60 : 135,960,423.90 = 78,310,851.40 : x
  2. Step 2: Convert to fraction form
    90,640,282.60/135,960,423.90 = 78,310,851.40/x
  3. Step 3: Cross multiply
    90,640,282.60x = 135,960,423.90 × 78,310,851.40
  4. Step 4: Simplify right side
    90,640,282.60x = 10,647,176,552,313,910
  5. Step 5: Solve for x
    x = 10,647,176,552,313,910/90,640,282.60
  6. Step 6: Final answer
    x = 117,466,277.10

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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.