Home / 98,110.20-147,165.30-91,111.80

Finding the Fourth Proportional to 98,110.20, 147,165.30 and 91,111.80

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Solution

The fourth proportional to 98,110.20, 147,165.30 and 91,111.80 is: 136,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,110.20 : 147,165.30 = 91,111.80 : x
  2. Step 2: Convert to fraction form
    98,110.20/147,165.30 = 91,111.80/x
  3. Step 3: Cross multiply
    98,110.20x = 147,165.30 × 91,111.80
  4. Step 4: Simplify right side
    98,110.20x = 13,408,495,380.54
  5. Step 5: Solve for x
    x = 13,408,495,380.54/98,110.20
  6. Step 6: Final answer
    x = 136,667.70

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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.