Home / 141,858,561.40-212,787,842.10-81,224,423.80

Finding the Fourth Proportional to 141,858,561.40, 212,787,842.10 and 81,224,423.80

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Solution

The fourth proportional to 141,858,561.40, 212,787,842.10 and 81,224,423.80 is: 121,836,635.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,858,561.40 : 212,787,842.10 = 81,224,423.80 : x
  2. Step 2: Convert to fraction form
    141,858,561.40/212,787,842.10 = 81,224,423.80/x
  3. Step 3: Cross multiply
    141,858,561.40x = 212,787,842.10 × 81,224,423.80
  4. Step 4: Simplify right side
    141,858,561.40x = 17,283,569,866,217,880
  5. Step 5: Solve for x
    x = 17,283,569,866,217,880/141,858,561.40
  6. Step 6: Final answer
    x = 121,836,635.70

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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.