Home / 189,520.98-284,280.08-77,174.79

Finding the Fourth Proportional to 189,520.98, 284,280.08 and 77,174.79

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Solution

The fourth proportional to 189,520.98, 284,280.08 and 77,174.79 is: 115,761.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,520.98 : 284,280.08 = 77,174.79 : x
  2. Step 2: Convert to fraction form
    189,520.98/284,280.08 = 77,174.79/x
  3. Step 3: Cross multiply
    189,520.98x = 284,280.08 × 77,174.79
  4. Step 4: Simplify right side
    189,520.98x = 21,939,255,089.31
  5. Step 5: Solve for x
    x = 21,939,255,089.31/189,520.98
  6. Step 6: Final answer
    x = 115,761.62

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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.