Home / 121,176.10-181,742.55-76,723.30

Finding the Fourth Proportional to 121,176.10, 181,742.55 and 76,723.30

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Solution

The fourth proportional to 121,176.10, 181,742.55 and 76,723.30 is: 115,071.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,176.10 : 181,742.55 = 76,723.30 : x
  2. Step 2: Convert to fraction form
    121,176.10/181,742.55 = 76,723.30/x
  3. Step 3: Cross multiply
    121,176.10x = 181,742.55 × 76,723.30
  4. Step 4: Simplify right side
    121,176.10x = 13,943,888,186.42
  5. Step 5: Solve for x
    x = 13,943,888,186.42/121,176.10
  6. Step 6: Final answer
    x = 115,071.27

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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.