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Finding the Fourth Proportional to 174,456.80, 261,685.20 and 43,128.80

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Solution

The fourth proportional to 174,456.80, 261,685.20 and 43,128.80 is: 64,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,456.80 : 261,685.20 = 43,128.80 : x
  2. Step 2: Convert to fraction form
    174,456.80/261,685.20 = 43,128.80/x
  3. Step 3: Cross multiply
    174,456.80x = 261,685.20 × 43,128.80
  4. Step 4: Simplify right side
    174,456.80x = 11,286,168,653.76
  5. Step 5: Solve for x
    x = 11,286,168,653.76/174,456.80
  6. Step 6: Final answer
    x = 64,693.20

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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.