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Finding the Fourth Proportional to 125,895.88, 173,729.54 and 72,178.28

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Solution

The fourth proportional to 125,895.88, 173,729.54 and 72,178.28 is: 99,602.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,895.88 : 173,729.54 = 72,178.28 : x
  2. Step 2: Convert to fraction form
    125,895.88/173,729.54 = 72,178.28/x
  3. Step 3: Cross multiply
    125,895.88x = 173,729.54 × 72,178.28
  4. Step 4: Simplify right side
    125,895.88x = 12,539,499,382.39
  5. Step 5: Solve for x
    x = 12,539,499,382.39/125,895.88
  6. Step 6: Final answer
    x = 99,602.14

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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.