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Finding the Fourth Proportional to 115,918.55, 173,713.80 and 101,812.40

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Solution

The fourth proportional to 115,918.55, 173,713.80 and 101,812.40 is: 152,574.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,918.55 : 173,713.80 = 101,812.40 : x
  2. Step 2: Convert to fraction form
    115,918.55/173,713.80 = 101,812.40/x
  3. Step 3: Cross multiply
    115,918.55x = 173,713.80 × 101,812.40
  4. Step 4: Simplify right side
    115,918.55x = 17,686,218,891.12
  5. Step 5: Solve for x
    x = 17,686,218,891.12/115,918.55
  6. Step 6: Final answer
    x = 152,574.54

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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.