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Finding the Fourth Proportional to 108,166.24, 149,242.72 and 65,722.24

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Solution

The fourth proportional to 108,166.24, 149,242.72 and 65,722.24 is: 90,680.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,166.24 : 149,242.72 = 65,722.24 : x
  2. Step 2: Convert to fraction form
    108,166.24/149,242.72 = 65,722.24/x
  3. Step 3: Cross multiply
    108,166.24x = 149,242.72 × 65,722.24
  4. Step 4: Simplify right side
    108,166.24x = 9,808,565,862.09
  5. Step 5: Solve for x
    x = 9,808,565,862.09/108,166.24
  6. Step 6: Final answer
    x = 90,680.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.