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Finding the Fourth Proportional to 158,797.08, 219,141.90 and 90,813

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Solution

The fourth proportional to 158,797.08, 219,141.90 and 90,813 is: 125,323.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,797.08 : 219,141.90 = 90,813 : x
  2. Step 2: Convert to fraction form
    158,797.08/219,141.90 = 90,813/x
  3. Step 3: Cross multiply
    158,797.08x = 219,141.90 × 90,813
  4. Step 4: Simplify right side
    158,797.08x = 19,900,933,364.70
  5. Step 5: Solve for x
    x = 19,900,933,364.70/158,797.08
  6. Step 6: Final answer
    x = 125,323.04

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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.