Home / 86,418.60-129,548.93-73,176.86

Finding the Fourth Proportional to 86,418.60, 129,548.93 and 73,176.86

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Solution

The fourth proportional to 86,418.60, 129,548.93 and 73,176.86 is: 109,698.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,418.60 : 129,548.93 = 73,176.86 : x
  2. Step 2: Convert to fraction form
    86,418.60/129,548.93 = 73,176.86/x
  3. Step 3: Cross multiply
    86,418.60x = 129,548.93 × 73,176.86
  4. Step 4: Simplify right side
    86,418.60x = 9,479,982,900.13
  5. Step 5: Solve for x
    x = 9,479,982,900.13/86,418.60
  6. Step 6: Final answer
    x = 109,698.41

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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.