Home / 121,287.60-181,853.16-51,148.08

Finding the Fourth Proportional to 121,287.60, 181,853.16 and 51,148.08

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Solution

The fourth proportional to 121,287.60, 181,853.16 and 51,148.08 is: 76,689.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,287.60 : 181,853.16 = 51,148.08 : x
  2. Step 2: Convert to fraction form
    121,287.60/181,853.16 = 51,148.08/x
  3. Step 3: Cross multiply
    121,287.60x = 181,853.16 × 51,148.08
  4. Step 4: Simplify right side
    121,287.60x = 9,301,439,975.93
  5. Step 5: Solve for x
    x = 9,301,439,975.93/121,287.60
  6. Step 6: Final answer
    x = 76,689.13

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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.