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Finding the Fourth Proportional to 108,586.80, 162,901.80 and 91,177.20

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Solution

The fourth proportional to 108,586.80, 162,901.80 and 91,177.20 is: 136,783.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,586.80 : 162,901.80 = 91,177.20 : x
  2. Step 2: Convert to fraction form
    108,586.80/162,901.80 = 91,177.20/x
  3. Step 3: Cross multiply
    108,586.80x = 162,901.80 × 91,177.20
  4. Step 4: Simplify right side
    108,586.80x = 14,852,929,998.96
  5. Step 5: Solve for x
    x = 14,852,929,998.96/108,586.80
  6. Step 6: Final answer
    x = 136,783.94

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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.