Home / 120,141.85-180,286.89-61,019.95

Finding the Fourth Proportional to 120,141.85, 180,286.89 and 61,019.95

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Solution

The fourth proportional to 120,141.85, 180,286.89 and 61,019.95 is: 91,567.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,141.85 : 180,286.89 = 61,019.95 : x
  2. Step 2: Convert to fraction form
    120,141.85/180,286.89 = 61,019.95/x
  3. Step 3: Cross multiply
    120,141.85x = 180,286.89 × 61,019.95
  4. Step 4: Simplify right side
    120,141.85x = 11,001,095,806.92
  5. Step 5: Solve for x
    x = 11,001,095,806.92/120,141.85
  6. Step 6: Final answer
    x = 91,567.56

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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.