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Finding the Fourth Proportional to 146,029.64, 201,520.98 and 78,961.64

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Solution

The fourth proportional to 146,029.64, 201,520.98 and 78,961.64 is: 108,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,029.64 : 201,520.98 = 78,961.64 : x
  2. Step 2: Convert to fraction form
    146,029.64/201,520.98 = 78,961.64/x
  3. Step 3: Cross multiply
    146,029.64x = 201,520.98 × 78,961.64
  4. Step 4: Simplify right side
    146,029.64x = 15,912,427,075.21
  5. Step 5: Solve for x
    x = 15,912,427,075.21/146,029.64
  6. Step 6: Final answer
    x = 108,967.10

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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.