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Finding the Fourth Proportional to 111,710.28, 154,291.80 and 73,918.92

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Solution

The fourth proportional to 111,710.28, 154,291.80 and 73,918.92 is: 102,095.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,710.28 : 154,291.80 = 73,918.92 : x
  2. Step 2: Convert to fraction form
    111,710.28/154,291.80 = 73,918.92/x
  3. Step 3: Cross multiply
    111,710.28x = 154,291.80 × 73,918.92
  4. Step 4: Simplify right side
    111,710.28x = 11,405,083,220.86
  5. Step 5: Solve for x
    x = 11,405,083,220.86/111,710.28
  6. Step 6: Final answer
    x = 102,095.20

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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.