Home / 116,817,781.78-161,258,177.98-72,786,535.20

Finding the Fourth Proportional to 116,817,781.78, 161,258,177.98 and 72,786,535.20

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Solution

The fourth proportional to 116,817,781.78, 161,258,177.98 and 72,786,535.20 is: 100,476,347.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,817,781.78 : 161,258,177.98 = 72,786,535.20 : x
  2. Step 2: Convert to fraction form
    116,817,781.78/161,258,177.98 = 72,786,535.20/x
  3. Step 3: Cross multiply
    116,817,781.78x = 161,258,177.98 × 72,786,535.20
  4. Step 4: Simplify right side
    116,817,781.78x = 11,737,424,047,829,134
  5. Step 5: Solve for x
    x = 11,737,424,047,829,134/116,817,781.78
  6. Step 6: Final answer
    x = 100,476,347.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.