Home / 142,723.40-196,958.32-78,192.92

Finding the Fourth Proportional to 142,723.40, 196,958.32 and 78,192.92

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Solution

The fourth proportional to 142,723.40, 196,958.32 and 78,192.92 is: 107,906.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,723.40 : 196,958.32 = 78,192.92 : x
  2. Step 2: Convert to fraction form
    142,723.40/196,958.32 = 78,192.92/x
  3. Step 3: Cross multiply
    142,723.40x = 196,958.32 × 78,192.92
  4. Step 4: Simplify right side
    142,723.40x = 15,400,746,159.09
  5. Step 5: Solve for x
    x = 15,400,746,159.09/142,723.40
  6. Step 6: Final answer
    x = 107,906.24

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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.