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Finding the Fourth Proportional to 108,961.52, 150,379.10 and 65,964.71

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Solution

The fourth proportional to 108,961.52, 150,379.10 and 65,964.71 is: 91,038.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,961.52 : 150,379.10 = 65,964.71 : x
  2. Step 2: Convert to fraction form
    108,961.52/150,379.10 = 65,964.71/x
  3. Step 3: Cross multiply
    108,961.52x = 150,379.10 × 65,964.71
  4. Step 4: Simplify right side
    108,961.52x = 9,919,712,639.84
  5. Step 5: Solve for x
    x = 9,919,712,639.84/108,961.52
  6. Step 6: Final answer
    x = 91,038.68

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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.