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Finding the Fourth Proportional to 109,959.66, 151,760.64 and 69,677.16

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Solution

The fourth proportional to 109,959.66, 151,760.64 and 69,677.16 is: 96,164.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,959.66 : 151,760.64 = 69,677.16 : x
  2. Step 2: Convert to fraction form
    109,959.66/151,760.64 = 69,677.16/x
  3. Step 3: Cross multiply
    109,959.66x = 151,760.64 × 69,677.16
  4. Step 4: Simplify right side
    109,959.66x = 10,574,250,394.98
  5. Step 5: Solve for x
    x = 10,574,250,394.98/109,959.66
  6. Step 6: Final answer
    x = 96,164.82

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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.