Home / 142,476.39-196,617.60-78,818.49

Finding the Fourth Proportional to 142,476.39, 196,617.60 and 78,818.49

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Solution

The fourth proportional to 142,476.39, 196,617.60 and 78,818.49 is: 108,769.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,476.39 : 196,617.60 = 78,818.49 : x
  2. Step 2: Convert to fraction form
    142,476.39/196,617.60 = 78,818.49/x
  3. Step 3: Cross multiply
    142,476.39x = 196,617.60 × 78,818.49
  4. Step 4: Simplify right side
    142,476.39x = 15,497,102,339.42
  5. Step 5: Solve for x
    x = 15,497,102,339.42/142,476.39
  6. Step 6: Final answer
    x = 108,769.62

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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.