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Finding the Fourth Proportional to 181,988.60, 272,982.90 and 156,619.40

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Solution

The fourth proportional to 181,988.60, 272,982.90 and 156,619.40 is: 234,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,988.60 : 272,982.90 = 156,619.40 : x
  2. Step 2: Convert to fraction form
    181,988.60/272,982.90 = 156,619.40/x
  3. Step 3: Cross multiply
    181,988.60x = 272,982.90 × 156,619.40
  4. Step 4: Simplify right side
    181,988.60x = 42,754,418,008.26
  5. Step 5: Solve for x
    x = 42,754,418,008.26/181,988.60
  6. Step 6: Final answer
    x = 234,929.10

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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.