Home / 201,870.53-302,579.45-81,899.61

Finding the Fourth Proportional to 201,870.53, 302,579.45 and 81,899.61

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Solution

The fourth proportional to 201,870.53, 302,579.45 and 81,899.61 is: 122,757.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,870.53 : 302,579.45 = 81,899.61 : x
  2. Step 2: Convert to fraction form
    201,870.53/302,579.45 = 81,899.61/x
  3. Step 3: Cross multiply
    201,870.53x = 302,579.45 × 81,899.61
  4. Step 4: Simplify right side
    201,870.53x = 24,781,137,711.97
  5. Step 5: Solve for x
    x = 24,781,137,711.97/201,870.53
  6. Step 6: Final answer
    x = 122,757.58

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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.