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Finding the Fourth Proportional to 153,617.52, 212,040 and 89,932.08

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Solution

The fourth proportional to 153,617.52, 212,040 and 89,932.08 is: 124,134.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,617.52 : 212,040 = 89,932.08 : x
  2. Step 2: Convert to fraction form
    153,617.52/212,040 = 89,932.08/x
  3. Step 3: Cross multiply
    153,617.52x = 212,040 × 89,932.08
  4. Step 4: Simplify right side
    153,617.52x = 19,069,198,243.20
  5. Step 5: Solve for x
    x = 19,069,198,243.20/153,617.52
  6. Step 6: Final answer
    x = 124,134.27

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1.5x scale

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.