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Finding the Fourth Proportional to 108,555.80, 162,833.70 and 91,059.80

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Solution

The fourth proportional to 108,555.80, 162,833.70 and 91,059.80 is: 136,589.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,555.80 : 162,833.70 = 91,059.80 : x
  2. Step 2: Convert to fraction form
    108,555.80/162,833.70 = 91,059.80/x
  3. Step 3: Cross multiply
    108,555.80x = 162,833.70 × 91,059.80
  4. Step 4: Simplify right side
    108,555.80x = 14,827,604,155.26
  5. Step 5: Solve for x
    x = 14,827,604,155.26/108,555.80
  6. Step 6: Final answer
    x = 136,589.70

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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.