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Finding the Fourth Proportional to 125,689.44, 173,466.54 and 71,991.84

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Solution

The fourth proportional to 125,689.44, 173,466.54 and 71,991.84 is: 99,357.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,689.44 : 173,466.54 = 71,991.84 : x
  2. Step 2: Convert to fraction form
    125,689.44/173,466.54 = 71,991.84/x
  3. Step 3: Cross multiply
    125,689.44x = 173,466.54 × 71,991.84
  4. Step 4: Simplify right side
    125,689.44x = 12,488,175,393.03
  5. Step 5: Solve for x
    x = 12,488,175,393.03/125,689.44
  6. Step 6: Final answer
    x = 99,357.40

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1.5x scale

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.