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Finding the Fourth Proportional to 103,378.99, 142,666.44 and 58,064.96

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Solution

The fourth proportional to 103,378.99, 142,666.44 and 58,064.96 is: 80,131.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,378.99 : 142,666.44 = 58,064.96 : x
  2. Step 2: Convert to fraction form
    103,378.99/142,666.44 = 58,064.96/x
  3. Step 3: Cross multiply
    103,378.99x = 142,666.44 × 58,064.96
  4. Step 4: Simplify right side
    103,378.99x = 8,283,920,418.61
  5. Step 5: Solve for x
    x = 8,283,920,418.61/103,378.99
  6. Step 6: Final answer
    x = 80,131.57

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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.