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Finding the Fourth Proportional to 124,611.52, 171,937.62 and 79,273

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Solution

The fourth proportional to 124,611.52, 171,937.62 and 79,273 is: 109,380.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,611.52 : 171,937.62 = 79,273 : x
  2. Step 2: Convert to fraction form
    124,611.52/171,937.62 = 79,273/x
  3. Step 3: Cross multiply
    124,611.52x = 171,937.62 × 79,273
  4. Step 4: Simplify right side
    124,611.52x = 13,630,010,950.26
  5. Step 5: Solve for x
    x = 13,630,010,950.26/124,611.52
  6. Step 6: Final answer
    x = 109,380.02

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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.