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Finding the Fourth Proportional to 103,618.88, 142,993.80 and 58,296.89

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Solution

The fourth proportional to 103,618.88, 142,993.80 and 58,296.89 is: 80,449.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,618.88 : 142,993.80 = 58,296.89 : x
  2. Step 2: Convert to fraction form
    103,618.88/142,993.80 = 58,296.89/x
  3. Step 3: Cross multiply
    103,618.88x = 142,993.80 × 58,296.89
  4. Step 4: Simplify right side
    103,618.88x = 8,336,093,829.28
  5. Step 5: Solve for x
    x = 8,336,093,829.28/103,618.88
  6. Step 6: Final answer
    x = 80,449.57

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1.5x scale

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.