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Finding the Fourth Proportional to 148,153.68, 204,456.96 and 81,085.68

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Solution

The fourth proportional to 148,153.68, 204,456.96 and 81,085.68 is: 111,900.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,153.68 : 204,456.96 = 81,085.68 : x
  2. Step 2: Convert to fraction form
    148,153.68/204,456.96 = 81,085.68/x
  3. Step 3: Cross multiply
    148,153.68x = 204,456.96 × 81,085.68
  4. Step 4: Simplify right side
    148,153.68x = 16,578,531,632.33
  5. Step 5: Solve for x
    x = 16,578,531,632.33/148,153.68
  6. Step 6: Final answer
    x = 111,900.91

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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.