Home / 156,031.80-234,015.30-67,288.20

Finding the Fourth Proportional to 156,031.80, 234,015.30 and 67,288.20

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Solution

The fourth proportional to 156,031.80, 234,015.30 and 67,288.20 is: 100,918.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,031.80 : 234,015.30 = 67,288.20 : x
  2. Step 2: Convert to fraction form
    156,031.80/234,015.30 = 67,288.20/x
  3. Step 3: Cross multiply
    156,031.80x = 234,015.30 × 67,288.20
  4. Step 4: Simplify right side
    156,031.80x = 15,746,468,309.46
  5. Step 5: Solve for x
    x = 15,746,468,309.46/156,031.80
  6. Step 6: Final answer
    x = 100,918.33

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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.