Home / 90,659.40-136,098.45-90,003.30

Finding the Fourth Proportional to 90,659.40, 136,098.45 and 90,003.30

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Solution

The fourth proportional to 90,659.40, 136,098.45 and 90,003.30 is: 135,113.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,659.40 : 136,098.45 = 90,003.30 : x
  2. Step 2: Convert to fraction form
    90,659.40/136,098.45 = 90,003.30/x
  3. Step 3: Cross multiply
    90,659.40x = 136,098.45 × 90,003.30
  4. Step 4: Simplify right side
    90,659.40x = 12,249,309,624.89
  5. Step 5: Solve for x
    x = 12,249,309,624.89/90,659.40
  6. Step 6: Final answer
    x = 135,113.51

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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.