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Finding the Fourth Proportional to 134,708.52, 185,894.10 and 74,278.20

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Solution

The fourth proportional to 134,708.52, 185,894.10 and 74,278.20 is: 102,501.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,708.52 : 185,894.10 = 74,278.20 : x
  2. Step 2: Convert to fraction form
    134,708.52/185,894.10 = 74,278.20/x
  3. Step 3: Cross multiply
    134,708.52x = 185,894.10 × 74,278.20
  4. Step 4: Simplify right side
    134,708.52x = 13,807,879,138.62
  5. Step 5: Solve for x
    x = 13,807,879,138.62/134,708.52
  6. Step 6: Final answer
    x = 102,501.90

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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.