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Finding the Fourth Proportional to 108,856.76, 150,221.01 and 61,108.88

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Solution

The fourth proportional to 108,856.76, 150,221.01 and 61,108.88 is: 84,329.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,856.76 : 150,221.01 = 61,108.88 : x
  2. Step 2: Convert to fraction form
    108,856.76/150,221.01 = 61,108.88/x
  3. Step 3: Cross multiply
    108,856.76x = 150,221.01 × 61,108.88
  4. Step 4: Simplify right side
    108,856.76x = 9,179,837,673.57
  5. Step 5: Solve for x
    x = 9,179,837,673.57/108,856.76
  6. Step 6: Final answer
    x = 84,329.51

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Half scale
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Double scale
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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.