Home / 128,222,175.96-192,330,566.64-31,178,381.22

Finding the Fourth Proportional to 128,222,175.96, 192,330,566.64 and 31,178,381.22

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Solution

The fourth proportional to 128,222,175.96, 192,330,566.64 and 31,178,381.22 is: 46,766,915.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,222,175.96 : 192,330,566.64 = 31,178,381.22 : x
  2. Step 2: Convert to fraction form
    128,222,175.96/192,330,566.64 = 31,178,381.22/x
  3. Step 3: Cross multiply
    128,222,175.96x = 192,330,566.64 × 31,178,381.22
  4. Step 4: Simplify right side
    128,222,175.96x = 5,996,555,726,960,534
  5. Step 5: Solve for x
    x = 5,996,555,726,960,534/128,222,175.96
  6. Step 6: Final answer
    x = 46,766,915.96

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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.