Home / 153,974.52-212,425.20-90,289.08

Finding the Fourth Proportional to 153,974.52, 212,425.20 and 90,289.08

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Solution

The fourth proportional to 153,974.52, 212,425.20 and 90,289.08 is: 124,563.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,974.52 : 212,425.20 = 90,289.08 : x
  2. Step 2: Convert to fraction form
    153,974.52/212,425.20 = 90,289.08/x
  3. Step 3: Cross multiply
    153,974.52x = 212,425.20 × 90,289.08
  4. Step 4: Simplify right side
    153,974.52x = 19,179,675,876.82
  5. Step 5: Solve for x
    x = 19,179,675,876.82/153,974.52
  6. Step 6: Final answer
    x = 124,563.96

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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.