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Finding the Fourth Proportional to 125,817, 173,622.52 and 72,063.76

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Solution

The fourth proportional to 125,817, 173,622.52 and 72,063.76 is: 99,445.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,817 : 173,622.52 = 72,063.76 : x
  2. Step 2: Convert to fraction form
    125,817/173,622.52 = 72,063.76/x
  3. Step 3: Cross multiply
    125,817x = 173,622.52 × 72,063.76
  4. Step 4: Simplify right side
    125,817x = 12,511,891,611.88
  5. Step 5: Solve for x
    x = 12,511,891,611.88/125,817
  6. Step 6: Final answer
    x = 99,445.16

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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.