Home / 159,318.12-219,809.52-90,396.18

Finding the Fourth Proportional to 159,318.12, 219,809.52 and 90,396.18

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Solution

The fourth proportional to 159,318.12, 219,809.52 and 90,396.18 is: 124,718.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,318.12 : 219,809.52 = 90,396.18 : x
  2. Step 2: Convert to fraction form
    159,318.12/219,809.52 = 90,396.18/x
  3. Step 3: Cross multiply
    159,318.12x = 219,809.52 × 90,396.18
  4. Step 4: Simplify right side
    159,318.12x = 19,869,940,935.63
  5. Step 5: Solve for x
    x = 19,869,940,935.63/159,318.12
  6. Step 6: Final answer
    x = 124,718.65

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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.