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Finding the Fourth Proportional to 148,643.40, 205,114.32 and 88,203.62

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Solution

The fourth proportional to 148,643.40, 205,114.32 and 88,203.62 is: 121,712.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,643.40 : 205,114.32 = 88,203.62 : x
  2. Step 2: Convert to fraction form
    148,643.40/205,114.32 = 88,203.62/x
  3. Step 3: Cross multiply
    148,643.40x = 205,114.32 × 88,203.62
  4. Step 4: Simplify right side
    148,643.40x = 18,091,825,537.84
  5. Step 5: Solve for x
    x = 18,091,825,537.84/148,643.40
  6. Step 6: Final answer
    x = 121,712.94

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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.