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Finding the Fourth Proportional to 153,356.40, 230,072.76 and 121,885.20

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Solution

The fourth proportional to 153,356.40, 230,072.76 and 121,885.20 is: 182,858.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,356.40 : 230,072.76 = 121,885.20 : x
  2. Step 2: Convert to fraction form
    153,356.40/230,072.76 = 121,885.20/x
  3. Step 3: Cross multiply
    153,356.40x = 230,072.76 × 121,885.20
  4. Step 4: Simplify right side
    153,356.40x = 28,042,464,367.15
  5. Step 5: Solve for x
    x = 28,042,464,367.15/153,356.40
  6. Step 6: Final answer
    x = 182,858.13

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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.