Home / 159,128,857.80-238,693,286.70-120,865,105.80

Finding the Fourth Proportional to 159,128,857.80, 238,693,286.70 and 120,865,105.80

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Solution

The fourth proportional to 159,128,857.80, 238,693,286.70 and 120,865,105.80 is: 181,297,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,128,857.80 : 238,693,286.70 = 120,865,105.80 : x
  2. Step 2: Convert to fraction form
    159,128,857.80/238,693,286.70 = 120,865,105.80/x
  3. Step 3: Cross multiply
    159,128,857.80x = 238,693,286.70 × 120,865,105.80
  4. Step 4: Simplify right side
    159,128,857.80x = 28,849,689,350,745,232
  5. Step 5: Solve for x
    x = 28,849,689,350,745,232/159,128,857.80
  6. Step 6: Final answer
    x = 181,297,658.70

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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.