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Finding the Fourth Proportional to 115,100.58, 172,605.51 and 55,918.74

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Solution

The fourth proportional to 115,100.58, 172,605.51 and 55,918.74 is: 83,856.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,100.58 : 172,605.51 = 55,918.74 : x
  2. Step 2: Convert to fraction form
    115,100.58/172,605.51 = 55,918.74/x
  3. Step 3: Cross multiply
    115,100.58x = 172,605.51 × 55,918.74
  4. Step 4: Simplify right side
    115,100.58x = 9,651,882,636.26
  5. Step 5: Solve for x
    x = 9,651,882,636.26/115,100.58
  6. Step 6: Final answer
    x = 83,856.07

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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.