Home / 118,673,921.80-178,010,882.70-72,757,419.40

Finding the Fourth Proportional to 118,673,921.80, 178,010,882.70 and 72,757,419.40

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Solution

The fourth proportional to 118,673,921.80, 178,010,882.70 and 72,757,419.40 is: 109,136,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,673,921.80 : 178,010,882.70 = 72,757,419.40 : x
  2. Step 2: Convert to fraction form
    118,673,921.80/178,010,882.70 = 72,757,419.40/x
  3. Step 3: Cross multiply
    118,673,921.80x = 178,010,882.70 × 72,757,419.40
  4. Step 4: Simplify right side
    118,673,921.80x = 12,951,612,450,368,104
  5. Step 5: Solve for x
    x = 12,951,612,450,368,104/118,673,921.80
  6. Step 6: Final answer
    x = 109,136,129.10

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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.