Home / 129,860.10-194,741.55-45,587.70

Finding the Fourth Proportional to 129,860.10, 194,741.55 and 45,587.70

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Solution

The fourth proportional to 129,860.10, 194,741.55 and 45,587.70 is: 68,364.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,860.10 : 194,741.55 = 45,587.70 : x
  2. Step 2: Convert to fraction form
    129,860.10/194,741.55 = 45,587.70/x
  3. Step 3: Cross multiply
    129,860.10x = 194,741.55 × 45,587.70
  4. Step 4: Simplify right side
    129,860.10x = 8,877,819,358.94
  5. Step 5: Solve for x
    x = 8,877,819,358.94/129,860.10
  6. Step 6: Final answer
    x = 68,364.49

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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.