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Finding the Fourth Proportional to 107,221, 147,965.10 and 62,517.64

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Solution

The fourth proportional to 107,221, 147,965.10 and 62,517.64 is: 86,274.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,221 : 147,965.10 = 62,517.64 : x
  2. Step 2: Convert to fraction form
    107,221/147,965.10 = 62,517.64/x
  3. Step 3: Cross multiply
    107,221x = 147,965.10 × 62,517.64
  4. Step 4: Simplify right side
    107,221x = 9,250,428,854.36
  5. Step 5: Solve for x
    x = 9,250,428,854.36/107,221
  6. Step 6: Final answer
    x = 86,274.41

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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.