Home / 189,402.55-284,072.82-77,078.23

Finding the Fourth Proportional to 189,402.55, 284,072.82 and 77,078.23

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Solution

The fourth proportional to 189,402.55, 284,072.82 and 77,078.23 is: 115,604.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,402.55 : 284,072.82 = 77,078.23 : x
  2. Step 2: Convert to fraction form
    189,402.55/284,072.82 = 77,078.23/x
  3. Step 3: Cross multiply
    189,402.55x = 284,072.82 × 77,078.23
  4. Step 4: Simplify right side
    189,402.55x = 21,895,830,156.71
  5. Step 5: Solve for x
    x = 21,895,830,156.71/189,402.55
  6. Step 6: Final answer
    x = 115,604.73

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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.