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Finding the Fourth Proportional to 123,341.40, 185,012.10 and 67,159.80

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Solution

The fourth proportional to 123,341.40, 185,012.10 and 67,159.80 is: 100,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,341.40 : 185,012.10 = 67,159.80 : x
  2. Step 2: Convert to fraction form
    123,341.40/185,012.10 = 67,159.80/x
  3. Step 3: Cross multiply
    123,341.40x = 185,012.10 × 67,159.80
  4. Step 4: Simplify right side
    123,341.40x = 12,425,375,633.58
  5. Step 5: Solve for x
    x = 12,425,375,633.58/123,341.40
  6. Step 6: Final answer
    x = 100,739.70

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1.5x scale

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.