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Finding the Fourth Proportional to 124,025.53, 185,978.11 and 72,748.20

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Solution

The fourth proportional to 124,025.53, 185,978.11 and 72,748.20 is: 109,087.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,025.53 : 185,978.11 = 72,748.20 : x
  2. Step 2: Convert to fraction form
    124,025.53/185,978.11 = 72,748.20/x
  3. Step 3: Cross multiply
    124,025.53x = 185,978.11 × 72,748.20
  4. Step 4: Simplify right side
    124,025.53x = 13,529,572,378.16
  5. Step 5: Solve for x
    x = 13,529,572,378.16/124,025.53
  6. Step 6: Final answer
    x = 109,087.00

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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.