Home / 127,890.90-176,483.97-71,301.78

Finding the Fourth Proportional to 127,890.90, 176,483.97 and 71,301.78

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Solution

The fourth proportional to 127,890.90, 176,483.97 and 71,301.78 is: 98,393.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,890.90 : 176,483.97 = 71,301.78 : x
  2. Step 2: Convert to fraction form
    127,890.90/176,483.97 = 71,301.78/x
  3. Step 3: Cross multiply
    127,890.90x = 176,483.97 × 71,301.78
  4. Step 4: Simplify right side
    127,890.90x = 12,583,621,202.47
  5. Step 5: Solve for x
    x = 12,583,621,202.47/127,890.90
  6. Step 6: Final answer
    x = 98,393.41

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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.