Home / 105,538.20-157,961.70-82,037.40

Finding the Fourth Proportional to 105,538.20, 157,961.70 and 82,037.40

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Solution

The fourth proportional to 105,538.20, 157,961.70 and 82,037.40 is: 122,787.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,538.20 : 157,961.70 = 82,037.40 : x
  2. Step 2: Convert to fraction form
    105,538.20/157,961.70 = 82,037.40/x
  3. Step 3: Cross multiply
    105,538.20x = 157,961.70 × 82,037.40
  4. Step 4: Simplify right side
    105,538.20x = 12,958,767,167.58
  5. Step 5: Solve for x
    x = 12,958,767,167.58/105,538.20
  6. Step 6: Final answer
    x = 122,787.46

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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.