Home / 189,948.32-284,839.36-90,137.12

Finding the Fourth Proportional to 189,948.32, 284,839.36 and 90,137.12

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Solution

The fourth proportional to 189,948.32, 284,839.36 and 90,137.12 is: 135,166.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,948.32 : 284,839.36 = 90,137.12 : x
  2. Step 2: Convert to fraction form
    189,948.32/284,839.36 = 90,137.12/x
  3. Step 3: Cross multiply
    189,948.32x = 284,839.36 × 90,137.12
  4. Step 4: Simplify right side
    189,948.32x = 25,674,599,573.04
  5. Step 5: Solve for x
    x = 25,674,599,573.04/189,948.32
  6. Step 6: Final answer
    x = 135,166.24

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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.