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Finding the Fourth Proportional to 191,333.88, 286,989.21 and 71,367.71

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Solution

The fourth proportional to 191,333.88, 286,989.21 and 71,367.71 is: 107,047.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,333.88 : 286,989.21 = 71,367.71 : x
  2. Step 2: Convert to fraction form
    191,333.88/286,989.21 = 71,367.71/x
  3. Step 3: Cross multiply
    191,333.88x = 286,989.21 × 71,367.71
  4. Step 4: Simplify right side
    191,333.88x = 20,481,761,277.46
  5. Step 5: Solve for x
    x = 20,481,761,277.46/191,333.88
  6. Step 6: Final answer
    x = 107,047.23

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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.