Home / 91,812.10-137,426.55-84,813.70

Finding the Fourth Proportional to 91,812.10, 137,426.55 and 84,813.70

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Solution

The fourth proportional to 91,812.10, 137,426.55 and 84,813.70 is: 126,951.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,812.10 : 137,426.55 = 84,813.70 : x
  2. Step 2: Convert to fraction form
    91,812.10/137,426.55 = 84,813.70/x
  3. Step 3: Cross multiply
    91,812.10x = 137,426.55 × 84,813.70
  4. Step 4: Simplify right side
    91,812.10x = 11,655,654,183.74
  5. Step 5: Solve for x
    x = 11,655,654,183.74/91,812.10
  6. Step 6: Final answer
    x = 126,951.18

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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.