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Finding the Fourth Proportional to 148,681.46, 205,087.08 and 88,209.28

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Solution

The fourth proportional to 148,681.46, 205,087.08 and 88,209.28 is: 121,673.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,681.46 : 205,087.08 = 88,209.28 : x
  2. Step 2: Convert to fraction form
    148,681.46/205,087.08 = 88,209.28/x
  3. Step 3: Cross multiply
    148,681.46x = 205,087.08 × 88,209.28
  4. Step 4: Simplify right side
    148,681.46x = 18,090,583,664.10
  5. Step 5: Solve for x
    x = 18,090,583,664.10/148,681.46
  6. Step 6: Final answer
    x = 121,673.43

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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.