Home / 94,903.61-130,987.01-78,972.53

Finding the Fourth Proportional to 94,903.61, 130,987.01 and 78,972.53

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Solution

The fourth proportional to 94,903.61, 130,987.01 and 78,972.53 is: 108,998.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,903.61 : 130,987.01 = 78,972.53 : x
  2. Step 2: Convert to fraction form
    94,903.61/130,987.01 = 78,972.53/x
  3. Step 3: Cross multiply
    94,903.61x = 130,987.01 × 78,972.53
  4. Step 4: Simplify right side
    94,903.61x = 10,344,375,181.97
  5. Step 5: Solve for x
    x = 10,344,375,181.97/94,903.61
  6. Step 6: Final answer
    x = 108,998.75

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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.