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Finding the Fourth Proportional to 164,560.70, 246,743.85 and 85,828.70

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Solution

The fourth proportional to 164,560.70, 246,743.85 and 85,828.70 is: 128,692.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,560.70 : 246,743.85 = 85,828.70 : x
  2. Step 2: Convert to fraction form
    164,560.70/246,743.85 = 85,828.70/x
  3. Step 3: Cross multiply
    164,560.70x = 246,743.85 × 85,828.70
  4. Step 4: Simplify right side
    164,560.70x = 21,177,703,878.50
  5. Step 5: Solve for x
    x = 21,177,703,878.50/164,560.70
  6. Step 6: Final answer
    x = 128,692.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.