Home / 91,207,890.34-136,812,721.24-72,966,769.72

Finding the Fourth Proportional to 91,207,890.34, 136,812,721.24 and 72,966,769.72

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Solution

The fourth proportional to 91,207,890.34, 136,812,721.24 and 72,966,769.72 is: 109,450,863.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,207,890.34 : 136,812,721.24 = 72,966,769.72 : x
  2. Step 2: Convert to fraction form
    91,207,890.34/136,812,721.24 = 72,966,769.72/x
  3. Step 3: Cross multiply
    91,207,890.34x = 136,812,721.24 × 72,966,769.72
  4. Step 4: Simplify right side
    91,207,890.34x = 9,982,782,325,234,810
  5. Step 5: Solve for x
    x = 9,982,782,325,234,810/91,207,890.34
  6. Step 6: Final answer
    x = 109,450,863.17

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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.