Home / 90,635.10-135,952.65-38,147.10

Finding the Fourth Proportional to 90,635.10, 135,952.65 and 38,147.10

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Solution

The fourth proportional to 90,635.10, 135,952.65 and 38,147.10 is: 57,220.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,635.10 : 135,952.65 = 38,147.10 : x
  2. Step 2: Convert to fraction form
    90,635.10/135,952.65 = 38,147.10/x
  3. Step 3: Cross multiply
    90,635.10x = 135,952.65 × 38,147.10
  4. Step 4: Simplify right side
    90,635.10x = 5,186,199,334.82
  5. Step 5: Solve for x
    x = 5,186,199,334.82/90,635.10
  6. Step 6: Final answer
    x = 57,220.65

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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.