Home / 189,880.31-284,960.63-90,040.83

Finding the Fourth Proportional to 189,880.31, 284,960.63 and 90,040.83

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Solution

The fourth proportional to 189,880.31, 284,960.63 and 90,040.83 is: 135,127.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,880.31 : 284,960.63 = 90,040.83 : x
  2. Step 2: Convert to fraction form
    189,880.31/284,960.63 = 90,040.83/x
  3. Step 3: Cross multiply
    189,880.31x = 284,960.63 × 90,040.83
  4. Step 4: Simplify right side
    189,880.31x = 25,658,091,867.63
  5. Step 5: Solve for x
    x = 25,658,091,867.63/189,880.31
  6. Step 6: Final answer
    x = 135,127.72

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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.