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Finding the Fourth Proportional to 113,149.32, 156,174.12 and 65,395.77

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Solution

The fourth proportional to 113,149.32, 156,174.12 and 65,395.77 is: 90,262.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,149.32 : 156,174.12 = 65,395.77 : x
  2. Step 2: Convert to fraction form
    113,149.32/156,174.12 = 65,395.77/x
  3. Step 3: Cross multiply
    113,149.32x = 156,174.12 × 65,395.77
  4. Step 4: Simplify right side
    113,149.32x = 10,213,126,831.47
  5. Step 5: Solve for x
    x = 10,213,126,831.47/113,149.32
  6. Step 6: Final answer
    x = 90,262.38

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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.