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Finding the Fourth Proportional to 134,149.92, 185,114.16 and 80,424.96

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Solution

The fourth proportional to 134,149.92, 185,114.16 and 80,424.96 is: 110,978.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,149.92 : 185,114.16 = 80,424.96 : x
  2. Step 2: Convert to fraction form
    134,149.92/185,114.16 = 80,424.96/x
  3. Step 3: Cross multiply
    134,149.92x = 185,114.16 × 80,424.96
  4. Step 4: Simplify right side
    134,149.92x = 14,887,798,913.43
  5. Step 5: Solve for x
    x = 14,887,798,913.43/134,149.92
  6. Step 6: Final answer
    x = 110,978.81

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1.5x scale

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.