Home / 142,473.29-196,613.53-78,811.08

Finding the Fourth Proportional to 142,473.29, 196,613.53 and 78,811.08

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Solution

The fourth proportional to 142,473.29, 196,613.53 and 78,811.08 is: 108,759.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,473.29 : 196,613.53 = 78,811.08 : x
  2. Step 2: Convert to fraction form
    142,473.29/196,613.53 = 78,811.08/x
  3. Step 3: Cross multiply
    142,473.29x = 196,613.53 × 78,811.08
  4. Step 4: Simplify right side
    142,473.29x = 15,495,324,641.91
  5. Step 5: Solve for x
    x = 15,495,324,641.91/142,473.29
  6. Step 6: Final answer
    x = 108,759.51

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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.