Home / 141,869.76-195,778.08-78,206.16

Finding the Fourth Proportional to 141,869.76, 195,778.08 and 78,206.16

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Solution

The fourth proportional to 141,869.76, 195,778.08 and 78,206.16 is: 107,923.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,869.76 : 195,778.08 = 78,206.16 : x
  2. Step 2: Convert to fraction form
    141,869.76/195,778.08 = 78,206.16/x
  3. Step 3: Cross multiply
    141,869.76x = 195,778.08 × 78,206.16
  4. Step 4: Simplify right side
    141,869.76x = 15,311,051,848.97
  5. Step 5: Solve for x
    x = 15,311,051,848.97/141,869.76
  6. Step 6: Final answer
    x = 107,923.29

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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.