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Finding the Fourth Proportional to 181,678.60, 272,615.10 and 76,508.20

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Solution

The fourth proportional to 181,678.60, 272,615.10 and 76,508.20 is: 114,803.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,678.60 : 272,615.10 = 76,508.20 : x
  2. Step 2: Convert to fraction form
    181,678.60/272,615.10 = 76,508.20/x
  3. Step 3: Cross multiply
    181,678.60x = 272,615.10 × 76,508.20
  4. Step 4: Simplify right side
    181,678.60x = 20,857,290,593.82
  5. Step 5: Solve for x
    x = 20,857,290,593.82/181,678.60
  6. Step 6: Final answer
    x = 114,803.23

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1.5x scale

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.