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Finding the Fourth Proportional to 111,871.80, 154,386.54 and 60,888.24

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Solution

The fourth proportional to 111,871.80, 154,386.54 and 60,888.24 is: 84,027.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,871.80 : 154,386.54 = 60,888.24 : x
  2. Step 2: Convert to fraction form
    111,871.80/154,386.54 = 60,888.24/x
  3. Step 3: Cross multiply
    111,871.80x = 154,386.54 × 60,888.24
  4. Step 4: Simplify right side
    111,871.80x = 9,400,324,700.29
  5. Step 5: Solve for x
    x = 9,400,324,700.29/111,871.80
  6. Step 6: Final answer
    x = 84,027.65

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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.