Home / 189,590.12-284,218.57-77,364.82

Finding the Fourth Proportional to 189,590.12, 284,218.57 and 77,364.82

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Solution

The fourth proportional to 189,590.12, 284,218.57 and 77,364.82 is: 115,979.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,590.12 : 284,218.57 = 77,364.82 : x
  2. Step 2: Convert to fraction form
    189,590.12/284,218.57 = 77,364.82/x
  3. Step 3: Cross multiply
    189,590.12x = 284,218.57 × 77,364.82
  4. Step 4: Simplify right side
    189,590.12x = 21,988,518,960.69
  5. Step 5: Solve for x
    x = 21,988,518,960.69/189,590.12
  6. Step 6: Final answer
    x = 115,979.25

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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.