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Finding the Fourth Proportional to 160,645.70, 221,692.38 and 89,026.90

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Solution

The fourth proportional to 160,645.70, 221,692.38 and 89,026.90 is: 122,857.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,645.70 : 221,692.38 = 89,026.90 : x
  2. Step 2: Convert to fraction form
    160,645.70/221,692.38 = 89,026.90/x
  3. Step 3: Cross multiply
    160,645.70x = 221,692.38 × 89,026.90
  4. Step 4: Simplify right side
    160,645.70x = 19,736,585,345.02
  5. Step 5: Solve for x
    x = 19,736,585,345.02/160,645.70
  6. Step 6: Final answer
    x = 122,857.85

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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.