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Finding the Fourth Proportional to 147,921.20, 221,881.80 and 49,425.20

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Solution

The fourth proportional to 147,921.20, 221,881.80 and 49,425.20 is: 74,137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,921.20 : 221,881.80 = 49,425.20 : x
  2. Step 2: Convert to fraction form
    147,921.20/221,881.80 = 49,425.20/x
  3. Step 3: Cross multiply
    147,921.20x = 221,881.80 × 49,425.20
  4. Step 4: Simplify right side
    147,921.20x = 10,966,552,341.36
  5. Step 5: Solve for x
    x = 10,966,552,341.36/147,921.20
  6. Step 6: Final answer
    x = 74,137.80

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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.