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Finding the Fourth Proportional to 108,959.13, 150,362.70 and 61,211.46

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Solution

The fourth proportional to 108,959.13, 150,362.70 and 61,211.46 is: 84,471.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,959.13 : 150,362.70 = 61,211.46 : x
  2. Step 2: Convert to fraction form
    108,959.13/150,362.70 = 61,211.46/x
  3. Step 3: Cross multiply
    108,959.13x = 150,362.70 × 61,211.46
  4. Step 4: Simplify right side
    108,959.13x = 9,203,920,396.54
  5. Step 5: Solve for x
    x = 9,203,920,396.54/108,959.13
  6. Step 6: Final answer
    x = 84,471.31

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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.