Home / 136,931.86-188,933.59-79,537.08

Finding the Fourth Proportional to 136,931.86, 188,933.59 and 79,537.08

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Solution

The fourth proportional to 136,931.86, 188,933.59 and 79,537.08 is: 109,742.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,931.86 : 188,933.59 = 79,537.08 : x
  2. Step 2: Convert to fraction form
    136,931.86/188,933.59 = 79,537.08/x
  3. Step 3: Cross multiply
    136,931.86x = 188,933.59 × 79,537.08
  4. Step 4: Simplify right side
    136,931.86x = 15,027,225,947.59
  5. Step 5: Solve for x
    x = 15,027,225,947.59/136,931.86
  6. Step 6: Final answer
    x = 109,742.36

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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.