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Finding the Fourth Proportional to 124,459.53, 171,703.96 and 72,037.01

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Solution

The fourth proportional to 124,459.53, 171,703.96 and 72,037.01 is: 99,382.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,459.53 : 171,703.96 = 72,037.01 : x
  2. Step 2: Convert to fraction form
    124,459.53/171,703.96 = 72,037.01/x
  3. Step 3: Cross multiply
    124,459.53x = 171,703.96 × 72,037.01
  4. Step 4: Simplify right side
    124,459.53x = 12,369,039,883.56
  5. Step 5: Solve for x
    x = 12,369,039,883.56/124,459.53
  6. Step 6: Final answer
    x = 99,382.02

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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.