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Finding the Fourth Proportional to 148,860, 205,426.88 and 81,796.32

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Solution

The fourth proportional to 148,860, 205,426.88 and 81,796.32 is: 112,878.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,860 : 205,426.88 = 81,796.32 : x
  2. Step 2: Convert to fraction form
    148,860/205,426.88 = 81,796.32/x
  3. Step 3: Cross multiply
    148,860x = 205,426.88 × 81,796.32
  4. Step 4: Simplify right side
    148,860x = 16,803,162,813.08
  5. Step 5: Solve for x
    x = 16,803,162,813.08/148,860
  6. Step 6: Final answer
    x = 112,878.97

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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.