Home / 189,981.11-284,879.63-77,616.70

Finding the Fourth Proportional to 189,981.11, 284,879.63 and 77,616.70

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Solution

The fourth proportional to 189,981.11, 284,879.63 and 77,616.70 is: 116,387.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,981.11 : 284,879.63 = 77,616.70 : x
  2. Step 2: Convert to fraction form
    189,981.11/284,879.63 = 77,616.70/x
  3. Step 3: Cross multiply
    189,981.11x = 284,879.63 × 77,616.70
  4. Step 4: Simplify right side
    189,981.11x = 22,111,416,259.66
  5. Step 5: Solve for x
    x = 22,111,416,259.66/189,981.11
  6. Step 6: Final answer
    x = 116,387.44

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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.