Home / 189,555.70-284,328.05-77,208.14

Finding the Fourth Proportional to 189,555.70, 284,328.05 and 77,208.14

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Solution

The fourth proportional to 189,555.70, 284,328.05 and 77,208.14 is: 115,809.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,555.70 : 284,328.05 = 77,208.14 : x
  2. Step 2: Convert to fraction form
    189,555.70/284,328.05 = 77,208.14/x
  3. Step 3: Cross multiply
    189,555.70x = 284,328.05 × 77,208.14
  4. Step 4: Simplify right side
    189,555.70x = 21,952,438,082.65
  5. Step 5: Solve for x
    x = 21,952,438,082.65/189,555.70
  6. Step 6: Final answer
    x = 115,809.96

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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.