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Finding the Fourth Proportional to 115,166.49, 172,764.32 and 45,036.69

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Solution

The fourth proportional to 115,166.49, 172,764.32 and 45,036.69 is: 67,560.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,166.49 : 172,764.32 = 45,036.69 : x
  2. Step 2: Convert to fraction form
    115,166.49/172,764.32 = 45,036.69/x
  3. Step 3: Cross multiply
    115,166.49x = 172,764.32 × 45,036.69
  4. Step 4: Simplify right side
    115,166.49x = 7,780,732,897.72
  5. Step 5: Solve for x
    x = 7,780,732,897.72/115,166.49
  6. Step 6: Final answer
    x = 67,560.74

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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.