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Finding the Fourth Proportional to 101,472.08, 140,070.72 and 90,843.24

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Solution

The fourth proportional to 101,472.08, 140,070.72 and 90,843.24 is: 125,398.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,472.08 : 140,070.72 = 90,843.24 : x
  2. Step 2: Convert to fraction form
    101,472.08/140,070.72 = 90,843.24/x
  3. Step 3: Cross multiply
    101,472.08x = 140,070.72 × 90,843.24
  4. Step 4: Simplify right side
    101,472.08x = 12,724,478,033.93
  5. Step 5: Solve for x
    x = 12,724,478,033.93/101,472.08
  6. Step 6: Final answer
    x = 125,398.81

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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.