Home / 120,310.87-180,364.81-75,839.58

Finding the Fourth Proportional to 120,310.87, 180,364.81 and 75,839.58

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Solution

The fourth proportional to 120,310.87, 180,364.81 and 75,839.58 is: 113,695.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,310.87 : 180,364.81 = 75,839.58 : x
  2. Step 2: Convert to fraction form
    120,310.87/180,364.81 = 75,839.58/x
  3. Step 3: Cross multiply
    120,310.87x = 180,364.81 × 75,839.58
  4. Step 4: Simplify right side
    120,310.87x = 13,678,791,437.18
  5. Step 5: Solve for x
    x = 13,678,791,437.18/120,310.87
  6. Step 6: Final answer
    x = 113,695.39

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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.