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Finding the Fourth Proportional to 118,681.76, 177,966.48 and 43,777.28

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Solution

The fourth proportional to 118,681.76, 177,966.48 and 43,777.28 is: 65,645.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,681.76 : 177,966.48 = 43,777.28 : x
  2. Step 2: Convert to fraction form
    118,681.76/177,966.48 = 43,777.28/x
  3. Step 3: Cross multiply
    118,681.76x = 177,966.48 × 43,777.28
  4. Step 4: Simplify right side
    118,681.76x = 7,790,888,425.57
  5. Step 5: Solve for x
    x = 7,790,888,425.57/118,681.76
  6. Step 6: Final answer
    x = 65,645.20

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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.