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Finding the Fourth Proportional to 148,806.76, 205,140.90 and 106,349.80

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Solution

The fourth proportional to 148,806.76, 205,140.90 and 106,349.80 is: 146,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,806.76 : 205,140.90 = 106,349.80 : x
  2. Step 2: Convert to fraction form
    148,806.76/205,140.90 = 106,349.80/x
  3. Step 3: Cross multiply
    148,806.76x = 205,140.90 × 106,349.80
  4. Step 4: Simplify right side
    148,806.76x = 21,816,693,686.82
  5. Step 5: Solve for x
    x = 21,816,693,686.82/148,806.76
  6. Step 6: Final answer
    x = 146,610.90

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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.