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Finding the Fourth Proportional to 191,568.82, 287,353.29 and 79,125.46

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Solution

The fourth proportional to 191,568.82, 287,353.29 and 79,125.46 is: 118,688.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,568.82 : 287,353.29 = 79,125.46 : x
  2. Step 2: Convert to fraction form
    191,568.82/287,353.29 = 79,125.46/x
  3. Step 3: Cross multiply
    191,568.82x = 287,353.29 × 79,125.46
  4. Step 4: Simplify right side
    191,568.82x = 22,736,961,253.76
  5. Step 5: Solve for x
    x = 22,736,961,253.76/191,568.82
  6. Step 6: Final answer
    x = 118,688.21

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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.