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Finding the Fourth Proportional to 102,215.40, 153,330.30 and 57,863.40

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Solution

The fourth proportional to 102,215.40, 153,330.30 and 57,863.40 is: 86,799.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,215.40 : 153,330.30 = 57,863.40 : x
  2. Step 2: Convert to fraction form
    102,215.40/153,330.30 = 57,863.40/x
  3. Step 3: Cross multiply
    102,215.40x = 153,330.30 × 57,863.40
  4. Step 4: Simplify right side
    102,215.40x = 8,872,212,481.02
  5. Step 5: Solve for x
    x = 8,872,212,481.02/102,215.40
  6. Step 6: Final answer
    x = 86,799.18

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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.