Home / 98,278.72-135,686.56-69,659.04

Finding the Fourth Proportional to 98,278.72, 135,686.56 and 69,659.04

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Solution

The fourth proportional to 98,278.72, 135,686.56 and 69,659.04 is: 96,173.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,278.72 : 135,686.56 = 69,659.04 : x
  2. Step 2: Convert to fraction form
    98,278.72/135,686.56 = 69,659.04/x
  3. Step 3: Cross multiply
    98,278.72x = 135,686.56 × 69,659.04
  4. Step 4: Simplify right side
    98,278.72x = 9,451,795,510.50
  5. Step 5: Solve for x
    x = 9,451,795,510.50/98,278.72
  6. Step 6: Final answer
    x = 96,173.37

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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.