Home / 129,989.36-194,854.86-90,463.43

Finding the Fourth Proportional to 129,989.36, 194,854.86 and 90,463.43

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Solution

The fourth proportional to 129,989.36, 194,854.86 and 90,463.43 is: 135,605.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,989.36 : 194,854.86 = 90,463.43 : x
  2. Step 2: Convert to fraction form
    129,989.36/194,854.86 = 90,463.43/x
  3. Step 3: Cross multiply
    129,989.36x = 194,854.86 × 90,463.43
  4. Step 4: Simplify right side
    129,989.36x = 17,627,238,987.77
  5. Step 5: Solve for x
    x = 17,627,238,987.77/129,989.36
  6. Step 6: Final answer
    x = 135,605.25

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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.