Home / 142,160.27-196,176.03-78,496.70

Finding the Fourth Proportional to 142,160.27, 196,176.03 and 78,496.70

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Solution

The fourth proportional to 142,160.27, 196,176.03 and 78,496.70 is: 108,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,160.27 : 196,176.03 = 78,496.70 : x
  2. Step 2: Convert to fraction form
    142,160.27/196,176.03 = 78,496.70/x
  3. Step 3: Cross multiply
    142,160.27x = 196,176.03 × 78,496.70
  4. Step 4: Simplify right side
    142,160.27x = 15,399,169,698.86
  5. Step 5: Solve for x
    x = 15,399,169,698.86/142,160.27
  6. Step 6: Final answer
    x = 108,322.60

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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.