Home / 102,400.45-141,373.25-91,038.57

Finding the Fourth Proportional to 102,400.45, 141,373.25 and 91,038.57

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Solution

The fourth proportional to 102,400.45, 141,373.25 and 91,038.57 is: 125,687.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,400.45 : 141,373.25 = 91,038.57 : x
  2. Step 2: Convert to fraction form
    102,400.45/141,373.25 = 91,038.57/x
  3. Step 3: Cross multiply
    102,400.45x = 141,373.25 × 91,038.57
  4. Step 4: Simplify right side
    102,400.45x = 12,870,417,872.30
  5. Step 5: Solve for x
    x = 12,870,417,872.30/102,400.45
  6. Step 6: Final answer
    x = 125,687.13

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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.