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Finding the Fourth Proportional to 124,458.95, 171,703.17 and 72,036.43

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Solution

The fourth proportional to 124,458.95, 171,703.17 and 72,036.43 is: 99,381.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,458.95 : 171,703.17 = 72,036.43 : x
  2. Step 2: Convert to fraction form
    124,458.95/171,703.17 = 72,036.43/x
  3. Step 3: Cross multiply
    124,458.95x = 171,703.17 × 72,036.43
  4. Step 4: Simplify right side
    124,458.95x = 12,368,883,237.54
  5. Step 5: Solve for x
    x = 12,368,883,237.54/124,458.95
  6. Step 6: Final answer
    x = 99,381.23

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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.