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Finding the Fourth Proportional to 125,248.84, 172,854.30 and 68,671

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Solution

The fourth proportional to 125,248.84, 172,854.30 and 68,671 is: 94,771.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,248.84 : 172,854.30 = 68,671 : x
  2. Step 2: Convert to fraction form
    125,248.84/172,854.30 = 68,671/x
  3. Step 3: Cross multiply
    125,248.84x = 172,854.30 × 68,671
  4. Step 4: Simplify right side
    125,248.84x = 11,870,077,635.30
  5. Step 5: Solve for x
    x = 11,870,077,635.30/125,248.84
  6. Step 6: Final answer
    x = 94,771.96

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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.