Home / 142,724.16-196,950.96-78,180.60

Finding the Fourth Proportional to 142,724.16, 196,950.96 and 78,180.60

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Solution

The fourth proportional to 142,724.16, 196,950.96 and 78,180.60 is: 107,884.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,724.16 : 196,950.96 = 78,180.60 : x
  2. Step 2: Convert to fraction form
    142,724.16/196,950.96 = 78,180.60/x
  3. Step 3: Cross multiply
    142,724.16x = 196,950.96 × 78,180.60
  4. Step 4: Simplify right side
    142,724.16x = 15,397,744,223.38
  5. Step 5: Solve for x
    x = 15,397,744,223.38/142,724.16
  6. Step 6: Final answer
    x = 107,884.64

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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.