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Finding the Fourth Proportional to 124,995.60, 172,444.56 and 77,166

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Solution

The fourth proportional to 124,995.60, 172,444.56 and 77,166 is: 106,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,995.60 : 172,444.56 = 77,166 : x
  2. Step 2: Convert to fraction form
    124,995.60/172,444.56 = 77,166/x
  3. Step 3: Cross multiply
    124,995.60x = 172,444.56 × 77,166
  4. Step 4: Simplify right side
    124,995.60x = 13,306,856,916.96
  5. Step 5: Solve for x
    x = 13,306,856,916.96/124,995.60
  6. Step 6: Final answer
    x = 106,458.60

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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.