Home / 78,732,172.45-118,098,258.68-71,551,814.05

Finding the Fourth Proportional to 78,732,172.45, 118,098,258.68 and 71,551,814.05

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Solution

The fourth proportional to 78,732,172.45, 118,098,258.68 and 71,551,814.05 is: 107,327,721.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,172.45 : 118,098,258.68 = 71,551,814.05 : x
  2. Step 2: Convert to fraction form
    78,732,172.45/118,098,258.68 = 71,551,814.05/x
  3. Step 3: Cross multiply
    78,732,172.45x = 118,098,258.68 × 71,551,814.05
  4. Step 4: Simplify right side
    78,732,172.45x = 8,450,144,644,342,399
  5. Step 5: Solve for x
    x = 8,450,144,644,342,399/78,732,172.45
  6. Step 6: Final answer
    x = 107,327,721.08

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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.