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Finding the Fourth Proportional to 103,368, 142,644.22 and 63,149.07

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Solution

The fourth proportional to 103,368, 142,644.22 and 63,149.07 is: 87,143.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,368 : 142,644.22 = 63,149.07 : x
  2. Step 2: Convert to fraction form
    103,368/142,644.22 = 63,149.07/x
  3. Step 3: Cross multiply
    103,368x = 142,644.22 × 63,149.07
  4. Step 4: Simplify right side
    103,368x = 9,007,849,833.88
  5. Step 5: Solve for x
    x = 9,007,849,833.88/103,368
  6. Step 6: Final answer
    x = 87,143.51

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