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Finding the Fourth Proportional to 185,980.80, 256,650.48 and 101,100

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Solution

The fourth proportional to 185,980.80, 256,650.48 and 101,100 is: 139,516.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,980.80 : 256,650.48 = 101,100 : x
  2. Step 2: Convert to fraction form
    185,980.80/256,650.48 = 101,100/x
  3. Step 3: Cross multiply
    185,980.80x = 256,650.48 × 101,100
  4. Step 4: Simplify right side
    185,980.80x = 25,947,363,528
  5. Step 5: Solve for x
    x = 25,947,363,528/185,980.80
  6. Step 6: Final answer
    x = 139,516.36

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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.