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Finding the Fourth Proportional to 158,462.28, 218,677.92 and 91,394.28

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Solution

The fourth proportional to 158,462.28, 218,677.92 and 91,394.28 is: 126,124.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,462.28 : 218,677.92 = 91,394.28 : x
  2. Step 2: Convert to fraction form
    158,462.28/218,677.92 = 91,394.28/x
  3. Step 3: Cross multiply
    158,462.28x = 218,677.92 × 91,394.28
  4. Step 4: Simplify right side
    158,462.28x = 19,985,911,050.30
  5. Step 5: Solve for x
    x = 19,985,911,050.30/158,462.28
  6. Step 6: Final answer
    x = 126,124.09

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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.