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Finding the Fourth Proportional to 158,348.94, 218,524.05 and 86,735.76

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Solution

The fourth proportional to 158,348.94, 218,524.05 and 86,735.76 is: 119,696.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,348.94 : 218,524.05 = 86,735.76 : x
  2. Step 2: Convert to fraction form
    158,348.94/218,524.05 = 86,735.76/x
  3. Step 3: Cross multiply
    158,348.94x = 218,524.05 × 86,735.76
  4. Step 4: Simplify right side
    158,348.94x = 18,953,849,555.03
  5. Step 5: Solve for x
    x = 18,953,849,555.03/158,348.94
  6. Step 6: Final answer
    x = 119,696.73

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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.