Home / 141,912,842.40-212,869,263.60-81,278,704.80

Finding the Fourth Proportional to 141,912,842.40, 212,869,263.60 and 81,278,704.80

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Solution

The fourth proportional to 141,912,842.40, 212,869,263.60 and 81,278,704.80 is: 121,918,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,912,842.40 : 212,869,263.60 = 81,278,704.80 : x
  2. Step 2: Convert to fraction form
    141,912,842.40/212,869,263.60 = 81,278,704.80/x
  3. Step 3: Cross multiply
    141,912,842.40x = 212,869,263.60 × 81,278,704.80
  4. Step 4: Simplify right side
    141,912,842.40x = 17,301,738,037,137,784
  5. Step 5: Solve for x
    x = 17,301,738,037,137,784/141,912,842.40
  6. Step 6: Final answer
    x = 121,918,057.20

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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.