Home / 162,002.30-243,003.45-73,428.80

Finding the Fourth Proportional to 162,002.30, 243,003.45 and 73,428.80

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Solution

The fourth proportional to 162,002.30, 243,003.45 and 73,428.80 is: 110,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,002.30 : 243,003.45 = 73,428.80 : x
  2. Step 2: Convert to fraction form
    162,002.30/243,003.45 = 73,428.80/x
  3. Step 3: Cross multiply
    162,002.30x = 243,003.45 × 73,428.80
  4. Step 4: Simplify right side
    162,002.30x = 17,843,451,729.36
  5. Step 5: Solve for x
    x = 17,843,451,729.36/162,002.30
  6. Step 6: Final answer
    x = 110,143.20

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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.