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Finding the Fourth Proportional to 171,308.76, 236,389.46 and 99,698.28

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Solution

The fourth proportional to 171,308.76, 236,389.46 and 99,698.28 is: 137,573.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,308.76 : 236,389.46 = 99,698.28 : x
  2. Step 2: Convert to fraction form
    171,308.76/236,389.46 = 99,698.28/x
  3. Step 3: Cross multiply
    171,308.76x = 236,389.46 × 99,698.28
  4. Step 4: Simplify right side
    171,308.76x = 23,567,622,572.13
  5. Step 5: Solve for x
    x = 23,567,622,572.13/171,308.76
  6. Step 6: Final answer
    x = 137,573.95

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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.