Home / 161,871.04-242,956.28-81,965.20

Finding the Fourth Proportional to 161,871.04, 242,956.28 and 81,965.20

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Solution

The fourth proportional to 161,871.04, 242,956.28 and 81,965.20 is: 123,023.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,871.04 : 242,956.28 = 81,965.20 : x
  2. Step 2: Convert to fraction form
    161,871.04/242,956.28 = 81,965.20/x
  3. Step 3: Cross multiply
    161,871.04x = 242,956.28 × 81,965.20
  4. Step 4: Simplify right side
    161,871.04x = 19,913,960,081.46
  5. Step 5: Solve for x
    x = 19,913,960,081.46/161,871.04
  6. Step 6: Final answer
    x = 123,023.61

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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.