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Finding the Fourth Proportional to 125,987.04, 173,862.59 and 69,398.28

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Solution

The fourth proportional to 125,987.04, 173,862.59 and 69,398.28 is: 95,769.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,987.04 : 173,862.59 = 69,398.28 : x
  2. Step 2: Convert to fraction form
    125,987.04/173,862.59 = 69,398.28/x
  3. Step 3: Cross multiply
    125,987.04x = 173,862.59 × 69,398.28
  4. Step 4: Simplify right side
    125,987.04x = 12,065,764,355.35
  5. Step 5: Solve for x
    x = 12,065,764,355.35/125,987.04
  6. Step 6: Final answer
    x = 95,769.89

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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.