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Finding the Fourth Proportional to 125,478.56, 187,989.48 and 112,026.46

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Solution

The fourth proportional to 125,478.56, 187,989.48 and 112,026.46 is: 167,835.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,478.56 : 187,989.48 = 112,026.46 : x
  2. Step 2: Convert to fraction form
    125,478.56/187,989.48 = 112,026.46/x
  3. Step 3: Cross multiply
    125,478.56x = 187,989.48 × 112,026.46
  4. Step 4: Simplify right side
    125,478.56x = 21,059,795,681.57
  5. Step 5: Solve for x
    x = 21,059,795,681.57/125,478.56
  6. Step 6: Final answer
    x = 167,835.81

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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.