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Finding the Fourth Proportional to 160,667.70, 221,718 and 89,047.08

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Solution

The fourth proportional to 160,667.70, 221,718 and 89,047.08 is: 122,883.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,667.70 : 221,718 = 89,047.08 : x
  2. Step 2: Convert to fraction form
    160,667.70/221,718 = 89,047.08/x
  3. Step 3: Cross multiply
    160,667.70x = 221,718 × 89,047.08
  4. Step 4: Simplify right side
    160,667.70x = 19,743,340,483.44
  5. Step 5: Solve for x
    x = 19,743,340,483.44/160,667.70
  6. Step 6: Final answer
    x = 122,883.07

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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.