Home / 105,201.40-157,725.30-42,839.80

Finding the Fourth Proportional to 105,201.40, 157,725.30 and 42,839.80

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Solution

The fourth proportional to 105,201.40, 157,725.30 and 42,839.80 is: 64,228.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,201.40 : 157,725.30 = 42,839.80 : x
  2. Step 2: Convert to fraction form
    105,201.40/157,725.30 = 42,839.80/x
  3. Step 3: Cross multiply
    105,201.40x = 157,725.30 × 42,839.80
  4. Step 4: Simplify right side
    105,201.40x = 6,756,920,306.94
  5. Step 5: Solve for x
    x = 6,756,920,306.94/105,201.40
  6. Step 6: Final answer
    x = 64,228.43

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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.