Home / 142,192.28-196,247.32-87,776.22

Finding the Fourth Proportional to 142,192.28, 196,247.32 and 87,776.22

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Solution

The fourth proportional to 142,192.28, 196,247.32 and 87,776.22 is: 121,144.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,192.28 : 196,247.32 = 87,776.22 : x
  2. Step 2: Convert to fraction form
    142,192.28/196,247.32 = 87,776.22/x
  3. Step 3: Cross multiply
    142,192.28x = 196,247.32 × 87,776.22
  4. Step 4: Simplify right side
    142,192.28x = 17,225,847,934.73
  5. Step 5: Solve for x
    x = 17,225,847,934.73/142,192.28
  6. Step 6: Final answer
    x = 121,144.75

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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.