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Finding the Fourth Proportional to 147,705.80, 203,834.84 and 84,043.61

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Solution

The fourth proportional to 147,705.80, 203,834.84 and 84,043.61 is: 115,980.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,705.80 : 203,834.84 = 84,043.61 : x
  2. Step 2: Convert to fraction form
    147,705.80/203,834.84 = 84,043.61/x
  3. Step 3: Cross multiply
    147,705.80x = 203,834.84 × 84,043.61
  4. Step 4: Simplify right side
    147,705.80x = 17,131,014,357.98
  5. Step 5: Solve for x
    x = 17,131,014,357.98/147,705.80
  6. Step 6: Final answer
    x = 115,980.65

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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.