Home / 91,362.87-137,059.07-28,168.20

Finding the Fourth Proportional to 91,362.87, 137,059.07 and 28,168.20

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Solution

The fourth proportional to 91,362.87, 137,059.07 and 28,168.20 is: 42,256.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,362.87 : 137,059.07 = 28,168.20 : x
  2. Step 2: Convert to fraction form
    91,362.87/137,059.07 = 28,168.20/x
  3. Step 3: Cross multiply
    91,362.87x = 137,059.07 × 28,168.20
  4. Step 4: Simplify right side
    91,362.87x = 3,860,707,154.73
  5. Step 5: Solve for x
    x = 3,860,707,154.73/91,362.87
  6. Step 6: Final answer
    x = 42,256.85

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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.