Home / 161,721.30-242,581.95-138,101.70

Finding the Fourth Proportional to 161,721.30, 242,581.95 and 138,101.70

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Solution

The fourth proportional to 161,721.30, 242,581.95 and 138,101.70 is: 207,152.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,721.30 : 242,581.95 = 138,101.70 : x
  2. Step 2: Convert to fraction form
    161,721.30/242,581.95 = 138,101.70/x
  3. Step 3: Cross multiply
    161,721.30x = 242,581.95 × 138,101.70
  4. Step 4: Simplify right side
    161,721.30x = 33,500,979,684.32
  5. Step 5: Solve for x
    x = 33,500,979,684.32/161,721.30
  6. Step 6: Final answer
    x = 207,152.55

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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.