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Finding the Fourth Proportional to 111,809.19, 167,713.80 and 76,642.23

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Solution

The fourth proportional to 111,809.19, 167,713.80 and 76,642.23 is: 114,963.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,809.19 : 167,713.80 = 76,642.23 : x
  2. Step 2: Convert to fraction form
    111,809.19/167,713.80 = 76,642.23/x
  3. Step 3: Cross multiply
    111,809.19x = 167,713.80 × 76,642.23
  4. Step 4: Simplify right side
    111,809.19x = 12,853,959,633.77
  5. Step 5: Solve for x
    x = 12,853,959,633.77/111,809.19
  6. Step 6: Final answer
    x = 114,963.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.