Home / 129,899.52-194,501.12-90,373.12

Finding the Fourth Proportional to 129,899.52, 194,501.12 and 90,373.12

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Solution

The fourth proportional to 129,899.52, 194,501.12 and 90,373.12 is: 135,317.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,899.52 : 194,501.12 = 90,373.12 : x
  2. Step 2: Convert to fraction form
    129,899.52/194,501.12 = 90,373.12/x
  3. Step 3: Cross multiply
    129,899.52x = 194,501.12 × 90,373.12
  4. Step 4: Simplify right side
    129,899.52x = 17,577,673,057.89
  5. Step 5: Solve for x
    x = 17,577,673,057.89/129,899.52
  6. Step 6: Final answer
    x = 135,317.46

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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.