Home / 129,909.40-194,925.63-89,989.84

Finding the Fourth Proportional to 129,909.40, 194,925.63 and 89,989.84

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Solution

The fourth proportional to 129,909.40, 194,925.63 and 89,989.84 is: 135,027.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,909.40 : 194,925.63 = 89,989.84 : x
  2. Step 2: Convert to fraction form
    129,909.40/194,925.63 = 89,989.84/x
  3. Step 3: Cross multiply
    129,909.40x = 194,925.63 × 89,989.84
  4. Step 4: Simplify right side
    129,909.40x = 17,541,326,255.60
  5. Step 5: Solve for x
    x = 17,541,326,255.60/129,909.40
  6. Step 6: Final answer
    x = 135,027.38

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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.