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Finding the Fourth Proportional to 103,726, 143,133.37 and 58,389.49

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Solution

The fourth proportional to 103,726, 143,133.37 and 58,389.49 is: 80,572.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,726 : 143,133.37 = 58,389.49 : x
  2. Step 2: Convert to fraction form
    103,726/143,133.37 = 58,389.49/x
  3. Step 3: Cross multiply
    103,726x = 143,133.37 × 58,389.49
  4. Step 4: Simplify right side
    103,726x = 8,357,484,476.28
  5. Step 5: Solve for x
    x = 8,357,484,476.28/103,726
  6. Step 6: Final answer
    x = 80,572.71

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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.