Home / 142,025.67-195,999.53-78,367.55

Finding the Fourth Proportional to 142,025.67, 195,999.53 and 78,367.55

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Solution

The fourth proportional to 142,025.67, 195,999.53 and 78,367.55 is: 108,149.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,025.67 : 195,999.53 = 78,367.55 : x
  2. Step 2: Convert to fraction form
    142,025.67/195,999.53 = 78,367.55/x
  3. Step 3: Cross multiply
    142,025.67x = 195,999.53 × 78,367.55
  4. Step 4: Simplify right side
    142,025.67x = 15,360,001,595.42
  5. Step 5: Solve for x
    x = 15,360,001,595.42/142,025.67
  6. Step 6: Final answer
    x = 108,149.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.