Home / 90,742.40-136,113.60-62,748.80

Finding the Fourth Proportional to 90,742.40, 136,113.60 and 62,748.80

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Solution

The fourth proportional to 90,742.40, 136,113.60 and 62,748.80 is: 94,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,742.40 : 136,113.60 = 62,748.80 : x
  2. Step 2: Convert to fraction form
    90,742.40/136,113.60 = 62,748.80/x
  3. Step 3: Cross multiply
    90,742.40x = 136,113.60 × 62,748.80
  4. Step 4: Simplify right side
    90,742.40x = 8,540,965,063.68
  5. Step 5: Solve for x
    x = 8,540,965,063.68/90,742.40
  6. Step 6: Final answer
    x = 94,123.20

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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.