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Finding the Fourth Proportional to 108,856.32, 150,230.40 and 61,112.80

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Solution

The fourth proportional to 108,856.32, 150,230.40 and 61,112.80 is: 84,340.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,856.32 : 150,230.40 = 61,112.80 : x
  2. Step 2: Convert to fraction form
    108,856.32/150,230.40 = 61,112.80/x
  3. Step 3: Cross multiply
    108,856.32x = 150,230.40 × 61,112.80
  4. Step 4: Simplify right side
    108,856.32x = 9,181,000,389.12
  5. Step 5: Solve for x
    x = 9,181,000,389.12/108,856.32
  6. Step 6: Final answer
    x = 84,340.54

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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.