Home / 121,157.07-181,742.90-38,051.07

Finding the Fourth Proportional to 121,157.07, 181,742.90 and 38,051.07

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Solution

The fourth proportional to 121,157.07, 181,742.90 and 38,051.07 is: 57,078.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,157.07 : 181,742.90 = 38,051.07 : x
  2. Step 2: Convert to fraction form
    121,157.07/181,742.90 = 38,051.07/x
  3. Step 3: Cross multiply
    121,157.07x = 181,742.90 × 38,051.07
  4. Step 4: Simplify right side
    121,157.07x = 6,915,511,619.65
  5. Step 5: Solve for x
    x = 6,915,511,619.65/121,157.07
  6. Step 6: Final answer
    x = 57,078.89

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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.