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Finding the Fourth Proportional to 108,520.35, 162,780.53 and 91,024.35

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Solution

The fourth proportional to 108,520.35, 162,780.53 and 91,024.35 is: 136,536.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,520.35 : 162,780.53 = 91,024.35 : x
  2. Step 2: Convert to fraction form
    108,520.35/162,780.53 = 91,024.35/x
  3. Step 3: Cross multiply
    108,520.35x = 162,780.53 × 91,024.35
  4. Step 4: Simplify right side
    108,520.35x = 14,816,991,480.78
  5. Step 5: Solve for x
    x = 14,816,991,480.78/108,520.35
  6. Step 6: Final answer
    x = 136,536.53

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1.5x scale

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.