Home / 123,515.15-170,276.38-87,692.09

Finding the Fourth Proportional to 123,515.15, 170,276.38 and 87,692.09

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Solution

The fourth proportional to 123,515.15, 170,276.38 and 87,692.09 is: 120,891.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,515.15 : 170,276.38 = 87,692.09 : x
  2. Step 2: Convert to fraction form
    123,515.15/170,276.38 = 87,692.09/x
  3. Step 3: Cross multiply
    123,515.15x = 170,276.38 × 87,692.09
  4. Step 4: Simplify right side
    123,515.15x = 14,931,890,569.22
  5. Step 5: Solve for x
    x = 14,931,890,569.22/123,515.15
  6. Step 6: Final answer
    x = 120,891.17

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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.