Home / 130,919.35-195,925.43-78,366.55

Finding the Fourth Proportional to 130,919.35, 195,925.43 and 78,366.55

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Solution

The fourth proportional to 130,919.35, 195,925.43 and 78,366.55 is: 117,278.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,919.35 : 195,925.43 = 78,366.55 : x
  2. Step 2: Convert to fraction form
    130,919.35/195,925.43 = 78,366.55/x
  3. Step 3: Cross multiply
    130,919.35x = 195,925.43 × 78,366.55
  4. Step 4: Simplify right side
    130,919.35x = 15,353,999,614.53
  5. Step 5: Solve for x
    x = 15,353,999,614.53/130,919.35
  6. Step 6: Final answer
    x = 117,278.31

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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.