Home / 136,565.16-188,461.59-79,217.76

Finding the Fourth Proportional to 136,565.16, 188,461.59 and 79,217.76

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Solution

The fourth proportional to 136,565.16, 188,461.59 and 79,217.76 is: 109,321.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,565.16 : 188,461.59 = 79,217.76 : x
  2. Step 2: Convert to fraction form
    136,565.16/188,461.59 = 79,217.76/x
  3. Step 3: Cross multiply
    136,565.16x = 188,461.59 × 79,217.76
  4. Step 4: Simplify right side
    136,565.16x = 14,929,505,005.84
  5. Step 5: Solve for x
    x = 14,929,505,005.84/136,565.16
  6. Step 6: Final answer
    x = 109,321.48

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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.