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Finding the Fourth Proportional to 125,894.58, 173,729.34 and 72,142.17

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Solution

The fourth proportional to 125,894.58, 173,729.34 and 72,142.17 is: 99,553.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,894.58 : 173,729.34 = 72,142.17 : x
  2. Step 2: Convert to fraction form
    125,894.58/173,729.34 = 72,142.17/x
  3. Step 3: Cross multiply
    125,894.58x = 173,729.34 × 72,142.17
  4. Step 4: Simplify right side
    125,894.58x = 12,533,211,580.27
  5. Step 5: Solve for x
    x = 12,533,211,580.27/125,894.58
  6. Step 6: Final answer
    x = 99,553.23

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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.