Home / 189,880.11-284,960.35-90,040.64

Finding the Fourth Proportional to 189,880.11, 284,960.35 and 90,040.64

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Solution

The fourth proportional to 189,880.11, 284,960.35 and 90,040.64 is: 135,127.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,880.11 : 284,960.35 = 90,040.64 : x
  2. Step 2: Convert to fraction form
    189,880.11/284,960.35 = 90,040.64/x
  3. Step 3: Cross multiply
    189,880.11x = 284,960.35 × 90,040.64
  4. Step 4: Simplify right side
    189,880.11x = 25,658,013,113.58
  5. Step 5: Solve for x
    x = 25,658,013,113.58/189,880.11
  6. Step 6: Final answer
    x = 135,127.44

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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.