Home / 107,069.85-147,755.02-66,780.75

Finding the Fourth Proportional to 107,069.85, 147,755.02 and 66,780.75

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Solution

The fourth proportional to 107,069.85, 147,755.02 and 66,780.75 is: 92,156.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,069.85 : 147,755.02 = 66,780.75 : x
  2. Step 2: Convert to fraction form
    107,069.85/147,755.02 = 66,780.75/x
  3. Step 3: Cross multiply
    107,069.85x = 147,755.02 × 66,780.75
  4. Step 4: Simplify right side
    107,069.85x = 9,867,190,717.96
  5. Step 5: Solve for x
    x = 9,867,190,717.96/107,069.85
  6. Step 6: Final answer
    x = 92,156.58

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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.