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Finding the Fourth Proportional to 125,257.88, 172,848.56 and 74,275.52

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Solution

The fourth proportional to 125,257.88, 172,848.56 and 74,275.52 is: 102,495.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,257.88 : 172,848.56 = 74,275.52 : x
  2. Step 2: Convert to fraction form
    125,257.88/172,848.56 = 74,275.52/x
  3. Step 3: Cross multiply
    125,257.88x = 172,848.56 × 74,275.52
  4. Step 4: Simplify right side
    125,257.88x = 12,838,415,439.63
  5. Step 5: Solve for x
    x = 12,838,415,439.63/125,257.88
  6. Step 6: Final answer
    x = 102,495.87

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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.