Home / 121,271.12-167,273.96-75,870.32

Finding the Fourth Proportional to 121,271.12, 167,273.96 and 75,870.32

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Solution

The fourth proportional to 121,271.12, 167,273.96 and 75,870.32 is: 104,650.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,271.12 : 167,273.96 = 75,870.32 : x
  2. Step 2: Convert to fraction form
    121,271.12/167,273.96 = 75,870.32/x
  3. Step 3: Cross multiply
    121,271.12x = 167,273.96 × 75,870.32
  4. Step 4: Simplify right side
    121,271.12x = 12,691,128,872.87
  5. Step 5: Solve for x
    x = 12,691,128,872.87/121,271.12
  6. Step 6: Final answer
    x = 104,650.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.