Home / 90,820.16-136,126.56-38,219.84

Finding the Fourth Proportional to 90,820.16, 136,126.56 and 38,219.84

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Solution

The fourth proportional to 90,820.16, 136,126.56 and 38,219.84 is: 57,286.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,820.16 : 136,126.56 = 38,219.84 : x
  2. Step 2: Convert to fraction form
    90,820.16/136,126.56 = 38,219.84/x
  3. Step 3: Cross multiply
    90,820.16x = 136,126.56 × 38,219.84
  4. Step 4: Simplify right side
    90,820.16x = 5,202,735,342.95
  5. Step 5: Solve for x
    x = 5,202,735,342.95/90,820.16
  6. Step 6: Final answer
    x = 57,286.13

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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.