Home / 125,690.39-173,490.13-72,011.15

Finding the Fourth Proportional to 125,690.39, 173,490.13 and 72,011.15

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Solution

The fourth proportional to 125,690.39, 173,490.13 and 72,011.15 is: 99,396.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,690.39 : 173,490.13 = 72,011.15 : x
  2. Step 2: Convert to fraction form
    125,690.39/173,490.13 = 72,011.15/x
  3. Step 3: Cross multiply
    125,690.39x = 173,490.13 × 72,011.15
  4. Step 4: Simplify right side
    125,690.39x = 12,493,223,774.95
  5. Step 5: Solve for x
    x = 12,493,223,774.95/125,690.39
  6. Step 6: Final answer
    x = 99,396.81

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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.