Home / 78,155.76-117,151.02-25,551.12

Finding the Fourth Proportional to 78,155.76, 117,151.02 and 25,551.12

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Solution

The fourth proportional to 78,155.76, 117,151.02 and 25,551.12 is: 38,299.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,155.76 : 117,151.02 = 25,551.12 : x
  2. Step 2: Convert to fraction form
    78,155.76/117,151.02 = 25,551.12/x
  3. Step 3: Cross multiply
    78,155.76x = 117,151.02 × 25,551.12
  4. Step 4: Simplify right side
    78,155.76x = 2,993,339,770.14
  5. Step 5: Solve for x
    x = 2,993,339,770.14/78,155.76
  6. Step 6: Final answer
    x = 38,299.67

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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.