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Finding the Fourth Proportional to 124,458.53, 171,702.59 and 72,036.01

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Solution

The fourth proportional to 124,458.53, 171,702.59 and 72,036.01 is: 99,380.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,458.53 : 171,702.59 = 72,036.01 : x
  2. Step 2: Convert to fraction form
    124,458.53/171,702.59 = 72,036.01/x
  3. Step 3: Cross multiply
    124,458.53x = 171,702.59 × 72,036.01
  4. Step 4: Simplify right side
    124,458.53x = 12,368,768,861.80
  5. Step 5: Solve for x
    x = 12,368,768,861.80/124,458.53
  6. Step 6: Final answer
    x = 99,380.65

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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.