Home / 121,228.80-181,025.28-99,086.72

Finding the Fourth Proportional to 121,228.80, 181,025.28 and 99,086.72

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Solution

The fourth proportional to 121,228.80, 181,025.28 and 99,086.72 is: 147,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,228.80 : 181,025.28 = 99,086.72 : x
  2. Step 2: Convert to fraction form
    121,228.80/181,025.28 = 99,086.72/x
  3. Step 3: Cross multiply
    121,228.80x = 181,025.28 × 99,086.72
  4. Step 4: Simplify right side
    121,228.80x = 17,937,201,232.28
  5. Step 5: Solve for x
    x = 17,937,201,232.28/121,228.80
  6. Step 6: Final answer
    x = 147,961.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.