Home / 161,720.20-242,624.04-91,648.72

Finding the Fourth Proportional to 161,720.20, 242,624.04 and 91,648.72

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Solution

The fourth proportional to 161,720.20, 242,624.04 and 91,648.72 is: 137,497.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,720.20 : 242,624.04 = 91,648.72 : x
  2. Step 2: Convert to fraction form
    161,720.20/242,624.04 = 91,648.72/x
  3. Step 3: Cross multiply
    161,720.20x = 242,624.04 × 91,648.72
  4. Step 4: Simplify right side
    161,720.20x = 22,236,182,707.23
  5. Step 5: Solve for x
    x = 22,236,182,707.23/161,720.20
  6. Step 6: Final answer
    x = 137,497.87

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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.