Home / 121,449.20-182,136.36-42,548.72

Finding the Fourth Proportional to 121,449.20, 182,136.36 and 42,548.72

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Solution

The fourth proportional to 121,449.20, 182,136.36 and 42,548.72 is: 63,809.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,449.20 : 182,136.36 = 42,548.72 : x
  2. Step 2: Convert to fraction form
    121,449.20/182,136.36 = 42,548.72/x
  3. Step 3: Cross multiply
    121,449.20x = 182,136.36 × 42,548.72
  4. Step 4: Simplify right side
    121,449.20x = 7,749,668,983.46
  5. Step 5: Solve for x
    x = 7,749,668,983.46/121,449.20
  6. Step 6: Final answer
    x = 63,809.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.