Home / 98,986.60-148,134.30-90,692.20

Finding the Fourth Proportional to 98,986.60, 148,134.30 and 90,692.20

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Solution

The fourth proportional to 98,986.60, 148,134.30 and 90,692.20 is: 135,721.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,986.60 : 148,134.30 = 90,692.20 : x
  2. Step 2: Convert to fraction form
    98,986.60/148,134.30 = 90,692.20/x
  3. Step 3: Cross multiply
    98,986.60x = 148,134.30 × 90,692.20
  4. Step 4: Simplify right side
    98,986.60x = 13,434,625,562.46
  5. Step 5: Solve for x
    x = 13,434,625,562.46/98,986.60
  6. Step 6: Final answer
    x = 135,721.66

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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.