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Finding the Fourth Proportional to 130,353.85, 179,891.49 and 72,992.68

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Solution

The fourth proportional to 130,353.85, 179,891.49 and 72,992.68 is: 100,731.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,353.85 : 179,891.49 = 72,992.68 : x
  2. Step 2: Convert to fraction form
    130,353.85/179,891.49 = 72,992.68/x
  3. Step 3: Cross multiply
    130,353.85x = 179,891.49 × 72,992.68
  4. Step 4: Simplify right side
    130,353.85x = 13,130,761,964.29
  5. Step 5: Solve for x
    x = 13,130,761,964.29/130,353.85
  6. Step 6: Final answer
    x = 100,731.68

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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.