Home / 98,017.30-135,294.33-77,909.86

Finding the Fourth Proportional to 98,017.30, 135,294.33 and 77,909.86

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Solution

The fourth proportional to 98,017.30, 135,294.33 and 77,909.86 is: 107,539.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,017.30 : 135,294.33 = 77,909.86 : x
  2. Step 2: Convert to fraction form
    98,017.30/135,294.33 = 77,909.86/x
  3. Step 3: Cross multiply
    98,017.30x = 135,294.33 × 77,909.86
  4. Step 4: Simplify right side
    98,017.30x = 10,540,762,309.09
  5. Step 5: Solve for x
    x = 10,540,762,309.09/98,017.30
  6. Step 6: Final answer
    x = 107,539.82

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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.