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Finding the Fourth Proportional to 105,608.71, 145,740 and 63,177.22

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Solution

The fourth proportional to 105,608.71, 145,740 and 63,177.22 is: 87,184.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,608.71 : 145,740 = 63,177.22 : x
  2. Step 2: Convert to fraction form
    105,608.71/145,740 = 63,177.22/x
  3. Step 3: Cross multiply
    105,608.71x = 145,740 × 63,177.22
  4. Step 4: Simplify right side
    105,608.71x = 9,207,448,042.80
  5. Step 5: Solve for x
    x = 9,207,448,042.80/105,608.71
  6. Step 6: Final answer
    x = 87,184.55

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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.