Home / 121,171.20-181,712.64-42,263.04

Finding the Fourth Proportional to 121,171.20, 181,712.64 and 42,263.04

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Solution

The fourth proportional to 121,171.20, 181,712.64 and 42,263.04 is: 63,379.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,171.20 : 181,712.64 = 42,263.04 : x
  2. Step 2: Convert to fraction form
    121,171.20/181,712.64 = 42,263.04/x
  3. Step 3: Cross multiply
    121,171.20x = 181,712.64 × 42,263.04
  4. Step 4: Simplify right side
    121,171.20x = 7,679,728,572.83
  5. Step 5: Solve for x
    x = 7,679,728,572.83/121,171.20
  6. Step 6: Final answer
    x = 63,379.16

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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.