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Finding the Fourth Proportional to 148,907.88, 205,493.54 and 81,844.20

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Solution

The fourth proportional to 148,907.88, 205,493.54 and 81,844.20 is: 112,945.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,907.88 : 205,493.54 = 81,844.20 : x
  2. Step 2: Convert to fraction form
    148,907.88/205,493.54 = 81,844.20/x
  3. Step 3: Cross multiply
    148,907.88x = 205,493.54 × 81,844.20
  4. Step 4: Simplify right side
    148,907.88x = 16,818,454,386.47
  5. Step 5: Solve for x
    x = 16,818,454,386.47/148,907.88
  6. Step 6: Final answer
    x = 112,945.36

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1.5x scale

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.