Home / 161,631.64-242,180.12-82,637.20

Finding the Fourth Proportional to 161,631.64, 242,180.12 and 82,637.20

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Solution

The fourth proportional to 161,631.64, 242,180.12 and 82,637.20 is: 123,819.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,631.64 : 242,180.12 = 82,637.20 : x
  2. Step 2: Convert to fraction form
    161,631.64/242,180.12 = 82,637.20/x
  3. Step 3: Cross multiply
    161,631.64x = 242,180.12 × 82,637.20
  4. Step 4: Simplify right side
    161,631.64x = 20,013,087,012.46
  5. Step 5: Solve for x
    x = 20,013,087,012.46/161,631.64
  6. Step 6: Final answer
    x = 123,819.12

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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.