Home / 121,132.46-181,723-42,225.50

Finding the Fourth Proportional to 121,132.46, 181,723 and 42,225.50

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Solution

The fourth proportional to 121,132.46, 181,723 and 42,225.50 is: 63,346.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,132.46 : 181,723 = 42,225.50 : x
  2. Step 2: Convert to fraction form
    121,132.46/181,723 = 42,225.50/x
  3. Step 3: Cross multiply
    121,132.46x = 181,723 × 42,225.50
  4. Step 4: Simplify right side
    121,132.46x = 7,673,344,536.50
  5. Step 5: Solve for x
    x = 7,673,344,536.50/121,132.46
  6. Step 6: Final answer
    x = 63,346.72

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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.