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Finding the Fourth Proportional to 125,964, 173,815.20 and 72,246.24

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Solution

The fourth proportional to 125,964, 173,815.20 and 72,246.24 is: 99,691.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,964 : 173,815.20 = 72,246.24 : x
  2. Step 2: Convert to fraction form
    125,964/173,815.20 = 72,246.24/x
  3. Step 3: Cross multiply
    125,964x = 173,815.20 × 72,246.24
  4. Step 4: Simplify right side
    125,964x = 12,557,494,654.85
  5. Step 5: Solve for x
    x = 12,557,494,654.85/125,964
  6. Step 6: Final answer
    x = 99,691.14

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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.