Home / 135,788.58-187,346.25-79,159.86

Finding the Fourth Proportional to 135,788.58, 187,346.25 and 79,159.86

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Solution

The fourth proportional to 135,788.58, 187,346.25 and 79,159.86 is: 109,216.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,788.58 : 187,346.25 = 79,159.86 : x
  2. Step 2: Convert to fraction form
    135,788.58/187,346.25 = 79,159.86/x
  3. Step 3: Cross multiply
    135,788.58x = 187,346.25 × 79,159.86
  4. Step 4: Simplify right side
    135,788.58x = 14,830,302,921.53
  5. Step 5: Solve for x
    x = 14,830,302,921.53/135,788.58
  6. Step 6: Final answer
    x = 109,216.13

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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.