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Finding the Fourth Proportional to 120,080.69, 180,120.80 and 112,773.38

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Solution

The fourth proportional to 120,080.69, 180,120.80 and 112,773.38 is: 169,159.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,080.69 : 180,120.80 = 112,773.38 : x
  2. Step 2: Convert to fraction form
    120,080.69/180,120.80 = 112,773.38/x
  3. Step 3: Cross multiply
    120,080.69x = 180,120.80 × 112,773.38
  4. Step 4: Simplify right side
    120,080.69x = 20,312,830,805.63
  5. Step 5: Solve for x
    x = 20,312,830,805.63/120,080.69
  6. Step 6: Final answer
    x = 169,159.85

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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.