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Finding the Fourth Proportional to 186,750.80, 280,126.20 and 153,945.80

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Solution

The fourth proportional to 186,750.80, 280,126.20 and 153,945.80 is: 230,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,750.80 : 280,126.20 = 153,945.80 : x
  2. Step 2: Convert to fraction form
    186,750.80/280,126.20 = 153,945.80/x
  3. Step 3: Cross multiply
    186,750.80x = 280,126.20 × 153,945.80
  4. Step 4: Simplify right side
    186,750.80x = 43,124,251,959.96
  5. Step 5: Solve for x
    x = 43,124,251,959.96/186,750.80
  6. Step 6: Final answer
    x = 230,918.70

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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.