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Finding the Fourth Proportional to 181,341.60, 272,101.80 and 81,572.40

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Solution

The fourth proportional to 181,341.60, 272,101.80 and 81,572.40 is: 122,398.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,341.60 : 272,101.80 = 81,572.40 : x
  2. Step 2: Convert to fraction form
    181,341.60/272,101.80 = 81,572.40/x
  3. Step 3: Cross multiply
    181,341.60x = 272,101.80 × 81,572.40
  4. Step 4: Simplify right side
    181,341.60x = 22,195,996,870.32
  5. Step 5: Solve for x
    x = 22,195,996,870.32/181,341.60
  6. Step 6: Final answer
    x = 122,398.81

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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.