Home / 159,898.38-239,876.82-79,978.20

Finding the Fourth Proportional to 159,898.38, 239,876.82 and 79,978.20

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Solution

The fourth proportional to 159,898.38, 239,876.82 and 79,978.20 is: 119,981.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,898.38 : 239,876.82 = 79,978.20 : x
  2. Step 2: Convert to fraction form
    159,898.38/239,876.82 = 79,978.20/x
  3. Step 3: Cross multiply
    159,898.38x = 239,876.82 × 79,978.20
  4. Step 4: Simplify right side
    159,898.38x = 19,184,916,285.32
  5. Step 5: Solve for x
    x = 19,184,916,285.32/159,898.38
  6. Step 6: Final answer
    x = 119,981.93

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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.