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Finding the Fourth Proportional to 108,703.86, 150,012.88 and 65,677.38

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Solution

The fourth proportional to 108,703.86, 150,012.88 and 65,677.38 is: 90,635.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,703.86 : 150,012.88 = 65,677.38 : x
  2. Step 2: Convert to fraction form
    108,703.86/150,012.88 = 65,677.38/x
  3. Step 3: Cross multiply
    108,703.86x = 150,012.88 × 65,677.38
  4. Step 4: Simplify right side
    108,703.86x = 9,852,452,760.46
  5. Step 5: Solve for x
    x = 9,852,452,760.46/108,703.86
  6. Step 6: Final answer
    x = 90,635.72

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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.