Home / 120,132.69-181,009.92-99,531.15

Finding the Fourth Proportional to 120,132.69, 181,009.92 and 99,531.15

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Solution

The fourth proportional to 120,132.69, 181,009.92 and 99,531.15 is: 149,968.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,132.69 : 181,009.92 = 99,531.15 : x
  2. Step 2: Convert to fraction form
    120,132.69/181,009.92 = 99,531.15/x
  3. Step 3: Cross multiply
    120,132.69x = 181,009.92 × 99,531.15
  4. Step 4: Simplify right side
    120,132.69x = 18,016,125,499.01
  5. Step 5: Solve for x
    x = 18,016,125,499.01/120,132.69
  6. Step 6: Final answer
    x = 149,968.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.