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Finding the Fourth Proportional to 147,205.80, 220,824.90 and 53,731.80

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Solution

The fourth proportional to 147,205.80, 220,824.90 and 53,731.80 is: 80,603.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,205.80 : 220,824.90 = 53,731.80 : x
  2. Step 2: Convert to fraction form
    147,205.80/220,824.90 = 53,731.80/x
  3. Step 3: Cross multiply
    147,205.80x = 220,824.90 × 53,731.80
  4. Step 4: Simplify right side
    147,205.80x = 11,865,319,361.82
  5. Step 5: Solve for x
    x = 11,865,319,361.82/147,205.80
  6. Step 6: Final answer
    x = 80,603.61

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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.