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Finding the Fourth Proportional to 173,917.60, 260,876.40 and 85,344.10

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Solution

The fourth proportional to 173,917.60, 260,876.40 and 85,344.10 is: 128,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,917.60 : 260,876.40 = 85,344.10 : x
  2. Step 2: Convert to fraction form
    173,917.60/260,876.40 = 85,344.10/x
  3. Step 3: Cross multiply
    173,917.60x = 260,876.40 × 85,344.10
  4. Step 4: Simplify right side
    173,917.60x = 22,264,261,569.24
  5. Step 5: Solve for x
    x = 22,264,261,569.24/173,917.60
  6. Step 6: Final answer
    x = 128,016.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.