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Finding the Fourth Proportional to 115,350.66, 158,947.65 and 85,088.03

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Solution

The fourth proportional to 115,350.66, 158,947.65 and 85,088.03 is: 117,247.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,350.66 : 158,947.65 = 85,088.03 : x
  2. Step 2: Convert to fraction form
    115,350.66/158,947.65 = 85,088.03/x
  3. Step 3: Cross multiply
    115,350.66x = 158,947.65 × 85,088.03
  4. Step 4: Simplify right side
    115,350.66x = 13,524,541,616.89
  5. Step 5: Solve for x
    x = 13,524,541,616.89/115,350.66
  6. Step 6: Final answer
    x = 117,247.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.