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Finding the Fourth Proportional to 191,568.32, 287,352.54 and 79,124.96

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Solution

The fourth proportional to 191,568.32, 287,352.54 and 79,124.96 is: 118,687.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,568.32 : 287,352.54 = 79,124.96 : x
  2. Step 2: Convert to fraction form
    191,568.32/287,352.54 = 79,124.96/x
  3. Step 3: Cross multiply
    191,568.32x = 287,352.54 × 79,124.96
  4. Step 4: Simplify right side
    191,568.32x = 22,736,756,796.64
  5. Step 5: Solve for x
    x = 22,736,756,796.64/191,568.32
  6. Step 6: Final answer
    x = 118,687.46

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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.