Home / 103,610.36-142,979.10-58,290.86

Finding the Fourth Proportional to 103,610.36, 142,979.10 and 58,290.86

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Solution

The fourth proportional to 103,610.36, 142,979.10 and 58,290.86 is: 80,439.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,610.36 : 142,979.10 = 58,290.86 : x
  2. Step 2: Convert to fraction form
    103,610.36/142,979.10 = 58,290.86/x
  3. Step 3: Cross multiply
    103,610.36x = 142,979.10 × 58,290.86
  4. Step 4: Simplify right side
    103,610.36x = 8,334,374,701.03
  5. Step 5: Solve for x
    x = 8,334,374,701.03/103,610.36
  6. Step 6: Final answer
    x = 80,439.59

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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.