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Finding the Fourth Proportional to 125,987.29, 173,862.93 and 69,398.53

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Solution

The fourth proportional to 125,987.29, 173,862.93 and 69,398.53 is: 95,770.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,987.29 : 173,862.93 = 69,398.53 : x
  2. Step 2: Convert to fraction form
    125,987.29/173,862.93 = 69,398.53/x
  3. Step 3: Cross multiply
    125,987.29x = 173,862.93 × 69,398.53
  4. Step 4: Simplify right side
    125,987.29x = 12,065,831,763.49
  5. Step 5: Solve for x
    x = 12,065,831,763.49/125,987.29
  6. Step 6: Final answer
    x = 95,770.23

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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.