Home / 121,187.23-181,863.89-42,301.45

Finding the Fourth Proportional to 121,187.23, 181,863.89 and 42,301.45

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Solution

The fourth proportional to 121,187.23, 181,863.89 and 42,301.45 is: 63,481.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,187.23 : 181,863.89 = 42,301.45 : x
  2. Step 2: Convert to fraction form
    121,187.23/181,863.89 = 42,301.45/x
  3. Step 3: Cross multiply
    121,187.23x = 181,863.89 × 42,301.45
  4. Step 4: Simplify right side
    121,187.23x = 7,693,106,249.64
  5. Step 5: Solve for x
    x = 7,693,106,249.64/121,187.23
  6. Step 6: Final answer
    x = 63,481.16

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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.