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Finding the Fourth Proportional to 144,874,163.31, 199,978,348.78 and 86,136,688.31

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Solution

The fourth proportional to 144,874,163.31, 199,978,348.78 and 86,136,688.31 is: 118,899,549.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,874,163.31 : 199,978,348.78 = 86,136,688.31 : x
  2. Step 2: Convert to fraction form
    144,874,163.31/199,978,348.78 = 86,136,688.31/x
  3. Step 3: Cross multiply
    144,874,163.31x = 199,978,348.78 × 86,136,688.31
  4. Step 4: Simplify right side
    144,874,163.31x = 17,225,472,696,180,756
  5. Step 5: Solve for x
    x = 17,225,472,696,180,756/144,874,163.31
  6. Step 6: Final answer
    x = 118,899,549.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.