Home / 127,721.41-176,261.06-71,132.78

Finding the Fourth Proportional to 127,721.41, 176,261.06 and 71,132.78

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Solution

The fourth proportional to 127,721.41, 176,261.06 and 71,132.78 is: 98,166.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,721.41 : 176,261.06 = 71,132.78 : x
  2. Step 2: Convert to fraction form
    127,721.41/176,261.06 = 71,132.78/x
  3. Step 3: Cross multiply
    127,721.41x = 176,261.06 × 71,132.78
  4. Step 4: Simplify right side
    127,721.41x = 12,537,939,203.55
  5. Step 5: Solve for x
    x = 12,537,939,203.55/127,721.41
  6. Step 6: Final answer
    x = 98,166.31

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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.