Home / 121,309.12-181,908.60-51,150.16

Finding the Fourth Proportional to 121,309.12, 181,908.60 and 51,150.16

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Solution

The fourth proportional to 121,309.12, 181,908.60 and 51,150.16 is: 76,702.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,309.12 : 181,908.60 = 51,150.16 : x
  2. Step 2: Convert to fraction form
    121,309.12/181,908.60 = 51,150.16/x
  3. Step 3: Cross multiply
    121,309.12x = 181,908.60 × 51,150.16
  4. Step 4: Simplify right side
    121,309.12x = 9,304,653,995.38
  5. Step 5: Solve for x
    x = 9,304,653,995.38/121,309.12
  6. Step 6: Final answer
    x = 76,702.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.