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Finding the Fourth Proportional to 148,681.66, 205,351.05 and 97,921.39

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Solution

The fourth proportional to 148,681.66, 205,351.05 and 97,921.39 is: 135,243.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,681.66 : 205,351.05 = 97,921.39 : x
  2. Step 2: Convert to fraction form
    148,681.66/205,351.05 = 97,921.39/x
  3. Step 3: Cross multiply
    148,681.66x = 205,351.05 × 97,921.39
  4. Step 4: Simplify right side
    148,681.66x = 20,108,260,253.96
  5. Step 5: Solve for x
    x = 20,108,260,253.96/148,681.66
  6. Step 6: Final answer
    x = 135,243.72

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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.