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Finding the Fourth Proportional to 125,099.76, 187,737.12 and 55,028.16

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Solution

The fourth proportional to 125,099.76, 187,737.12 and 55,028.16 is: 82,580.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,099.76 : 187,737.12 = 55,028.16 : x
  2. Step 2: Convert to fraction form
    125,099.76/187,737.12 = 55,028.16/x
  3. Step 3: Cross multiply
    125,099.76x = 187,737.12 × 55,028.16
  4. Step 4: Simplify right side
    125,099.76x = 10,330,828,277.30
  5. Step 5: Solve for x
    x = 10,330,828,277.30/125,099.76
  6. Step 6: Final answer
    x = 82,580.72

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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.