Home / 142,357.53-196,445.70-78,691.53

Finding the Fourth Proportional to 142,357.53, 196,445.70 and 78,691.53

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Solution

The fourth proportional to 142,357.53, 196,445.70 and 78,691.53 is: 108,590.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,357.53 : 196,445.70 = 78,691.53 : x
  2. Step 2: Convert to fraction form
    142,357.53/196,445.70 = 78,691.53/x
  3. Step 3: Cross multiply
    142,357.53x = 196,445.70 × 78,691.53
  4. Step 4: Simplify right side
    142,357.53x = 15,458,612,694.92
  5. Step 5: Solve for x
    x = 15,458,612,694.92/142,357.53
  6. Step 6: Final answer
    x = 108,590.06

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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.