Home / 112,376.21-155,082.20-67,080.47

Finding the Fourth Proportional to 112,376.21, 155,082.20 and 67,080.47

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Solution

The fourth proportional to 112,376.21, 155,082.20 and 67,080.47 is: 92,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,376.21 : 155,082.20 = 67,080.47 : x
  2. Step 2: Convert to fraction form
    112,376.21/155,082.20 = 67,080.47/x
  3. Step 3: Cross multiply
    112,376.21x = 155,082.20 × 67,080.47
  4. Step 4: Simplify right side
    112,376.21x = 10,402,985,753.82
  5. Step 5: Solve for x
    x = 10,402,985,753.82/112,376.21
  6. Step 6: Final answer
    x = 92,572.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.