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Finding the Fourth Proportional to 101,247.59, 138,507.43 and 100,821.13

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Solution

The fourth proportional to 101,247.59, 138,507.43 and 100,821.13 is: 137,924.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,247.59 : 138,507.43 = 100,821.13 : x
  2. Step 2: Convert to fraction form
    101,247.59/138,507.43 = 100,821.13/x
  3. Step 3: Cross multiply
    101,247.59x = 138,507.43 × 100,821.13
  4. Step 4: Simplify right side
    101,247.59x = 13,964,475,196.71
  5. Step 5: Solve for x
    x = 13,964,475,196.71/101,247.59
  6. Step 6: Final answer
    x = 137,924.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.