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Finding the Fourth Proportional to 148,607.40, 205,078.20 and 84,946.56

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Solution

The fourth proportional to 148,607.40, 205,078.20 and 84,946.56 is: 117,226.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,607.40 : 205,078.20 = 84,946.56 : x
  2. Step 2: Convert to fraction form
    148,607.40/205,078.20 = 84,946.56/x
  3. Step 3: Cross multiply
    148,607.40x = 205,078.20 × 84,946.56
  4. Step 4: Simplify right side
    148,607.40x = 17,420,687,620.99
  5. Step 5: Solve for x
    x = 17,420,687,620.99/148,607.40
  6. Step 6: Final answer
    x = 117,226.25

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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.