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Finding the Fourth Proportional to 125,115.52, 172,653.04 and 68,516

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Solution

The fourth proportional to 125,115.52, 172,653.04 and 68,516 is: 94,548.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,115.52 : 172,653.04 = 68,516 : x
  2. Step 2: Convert to fraction form
    125,115.52/172,653.04 = 68,516/x
  3. Step 3: Cross multiply
    125,115.52x = 172,653.04 × 68,516
  4. Step 4: Simplify right side
    125,115.52x = 11,829,495,688.64
  5. Step 5: Solve for x
    x = 11,829,495,688.64/125,115.52
  6. Step 6: Final answer
    x = 94,548.59

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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.