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Finding the Fourth Proportional to 125,085.79, 172,618.16 and 67,725.10

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Solution

The fourth proportional to 125,085.79, 172,618.16 and 67,725.10 is: 93,460.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,085.79 : 172,618.16 = 67,725.10 : x
  2. Step 2: Convert to fraction form
    125,085.79/172,618.16 = 67,725.10/x
  3. Step 3: Cross multiply
    125,085.79x = 172,618.16 × 67,725.10
  4. Step 4: Simplify right side
    125,085.79x = 11,690,582,147.82
  5. Step 5: Solve for x
    x = 11,690,582,147.82/125,085.79
  6. Step 6: Final answer
    x = 93,460.51

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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.