Home / 98,778.38-148,264.77-72,408.02

Finding the Fourth Proportional to 98,778.38, 148,264.77 and 72,408.02

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Solution

The fourth proportional to 98,778.38, 148,264.77 and 72,408.02 is: 108,683.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,778.38 : 148,264.77 = 72,408.02 : x
  2. Step 2: Convert to fraction form
    98,778.38/148,264.77 = 72,408.02/x
  3. Step 3: Cross multiply
    98,778.38x = 148,264.77 × 72,408.02
  4. Step 4: Simplify right side
    98,778.38x = 10,735,558,431.46
  5. Step 5: Solve for x
    x = 10,735,558,431.46/98,778.38
  6. Step 6: Final answer
    x = 108,683.28

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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.