Home / 119,130.12-178,797.71-69,140.78

Finding the Fourth Proportional to 119,130.12, 178,797.71 and 69,140.78

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Solution

The fourth proportional to 119,130.12, 178,797.71 and 69,140.78 is: 103,770.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,130.12 : 178,797.71 = 69,140.78 : x
  2. Step 2: Convert to fraction form
    119,130.12/178,797.71 = 69,140.78/x
  3. Step 3: Cross multiply
    119,130.12x = 178,797.71 × 69,140.78
  4. Step 4: Simplify right side
    119,130.12x = 12,362,211,891.92
  5. Step 5: Solve for x
    x = 12,362,211,891.92/119,130.12
  6. Step 6: Final answer
    x = 103,770.67

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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.