Home / 112,692.12-155,620.47-72,475.71

Finding the Fourth Proportional to 112,692.12, 155,620.47 and 72,475.71

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Solution

The fourth proportional to 112,692.12, 155,620.47 and 72,475.71 is: 100,084.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,692.12 : 155,620.47 = 72,475.71 : x
  2. Step 2: Convert to fraction form
    112,692.12/155,620.47 = 72,475.71/x
  3. Step 3: Cross multiply
    112,692.12x = 155,620.47 × 72,475.71
  4. Step 4: Simplify right side
    112,692.12x = 11,278,704,053.78
  5. Step 5: Solve for x
    x = 11,278,704,053.78/112,692.12
  6. Step 6: Final answer
    x = 100,084.23

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1.5x scale

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.