Home / 139,399.28-209,100-34,219.16

Finding the Fourth Proportional to 139,399.28, 209,100 and 34,219.16

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Solution

The fourth proportional to 139,399.28, 209,100 and 34,219.16 is: 51,329.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,399.28 : 209,100 = 34,219.16 : x
  2. Step 2: Convert to fraction form
    139,399.28/209,100 = 34,219.16/x
  3. Step 3: Cross multiply
    139,399.28x = 209,100 × 34,219.16
  4. Step 4: Simplify right side
    139,399.28x = 7,155,226,356.00
  5. Step 5: Solve for x
    x = 7,155,226,356.00/139,399.28
  6. Step 6: Final answer
    x = 51,329.01

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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.