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Finding the Fourth Proportional to 115,201.62, 172,802.55 and 75,934.08

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Solution

The fourth proportional to 115,201.62, 172,802.55 and 75,934.08 is: 113,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,201.62 : 172,802.55 = 75,934.08 : x
  2. Step 2: Convert to fraction form
    115,201.62/172,802.55 = 75,934.08/x
  3. Step 3: Cross multiply
    115,201.62x = 172,802.55 × 75,934.08
  4. Step 4: Simplify right side
    115,201.62x = 13,121,602,655.90
  5. Step 5: Solve for x
    x = 13,121,602,655.90/115,201.62
  6. Step 6: Final answer
    x = 113,901.20

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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.