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Finding the Fourth Proportional to 159,178.84, 219,651.06 and 91,182.76

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Solution

The fourth proportional to 159,178.84, 219,651.06 and 91,182.76 is: 125,823.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,178.84 : 219,651.06 = 91,182.76 : x
  2. Step 2: Convert to fraction form
    159,178.84/219,651.06 = 91,182.76/x
  3. Step 3: Cross multiply
    159,178.84x = 219,651.06 × 91,182.76
  4. Step 4: Simplify right side
    159,178.84x = 20,028,389,887.73
  5. Step 5: Solve for x
    x = 20,028,389,887.73/159,178.84
  6. Step 6: Final answer
    x = 125,823.19

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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.