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Finding the Fourth Proportional to 137,857.70, 206,495.93 and 63,040.81

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Solution

The fourth proportional to 137,857.70, 206,495.93 and 63,040.81 is: 94,428.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,857.70 : 206,495.93 = 63,040.81 : x
  2. Step 2: Convert to fraction form
    137,857.70/206,495.93 = 63,040.81/x
  3. Step 3: Cross multiply
    137,857.70x = 206,495.93 × 63,040.81
  4. Step 4: Simplify right side
    137,857.70x = 13,017,670,136.68
  5. Step 5: Solve for x
    x = 13,017,670,136.68/137,857.70
  6. Step 6: Final answer
    x = 94,428.32

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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.