Home / 142,765.76-197,107.20-91,802.24

Finding the Fourth Proportional to 142,765.76, 197,107.20 and 91,802.24

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Solution

The fourth proportional to 142,765.76, 197,107.20 and 91,802.24 is: 126,745.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,765.76 : 197,107.20 = 91,802.24 : x
  2. Step 2: Convert to fraction form
    142,765.76/197,107.20 = 91,802.24/x
  3. Step 3: Cross multiply
    142,765.76x = 197,107.20 × 91,802.24
  4. Step 4: Simplify right side
    142,765.76x = 18,094,882,480.13
  5. Step 5: Solve for x
    x = 18,094,882,480.13/142,765.76
  6. Step 6: Final answer
    x = 126,745.25

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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.