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Finding the Fourth Proportional to 153,353.20, 229,813.80 and 121,817.20

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Solution

The fourth proportional to 153,353.20, 229,813.80 and 121,817.20 is: 182,554.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,353.20 : 229,813.80 = 121,817.20 : x
  2. Step 2: Convert to fraction form
    153,353.20/229,813.80 = 121,817.20/x
  3. Step 3: Cross multiply
    153,353.20x = 229,813.80 × 121,817.20
  4. Step 4: Simplify right side
    153,353.20x = 27,995,273,637.36
  5. Step 5: Solve for x
    x = 27,995,273,637.36/153,353.20
  6. Step 6: Final answer
    x = 182,554.22

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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.