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Finding the Fourth Proportional to 115,854.66, 173,672.41 and 87,347.38

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Solution

The fourth proportional to 115,854.66, 173,672.41 and 87,347.38 is: 130,938.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,854.66 : 173,672.41 = 87,347.38 : x
  2. Step 2: Convert to fraction form
    115,854.66/173,672.41 = 87,347.38/x
  3. Step 3: Cross multiply
    115,854.66x = 173,672.41 × 87,347.38
  4. Step 4: Simplify right side
    115,854.66x = 15,169,829,555.05
  5. Step 5: Solve for x
    x = 15,169,829,555.05/115,854.66
  6. Step 6: Final answer
    x = 130,938.46

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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.