Home / 108,517.60-162,776.40-91,021.60

Finding the Fourth Proportional to 108,517.60, 162,776.40 and 91,021.60

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Solution

The fourth proportional to 108,517.60, 162,776.40 and 91,021.60 is: 136,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,517.60 : 162,776.40 = 91,021.60 : x
  2. Step 2: Convert to fraction form
    108,517.60/162,776.40 = 91,021.60/x
  3. Step 3: Cross multiply
    108,517.60x = 162,776.40 × 91,021.60
  4. Step 4: Simplify right side
    108,517.60x = 14,816,168,370.24
  5. Step 5: Solve for x
    x = 14,816,168,370.24/108,517.60
  6. Step 6: Final answer
    x = 136,532.40

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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.