Home / 136,717.08-188,684.16-76,308.72

Finding the Fourth Proportional to 136,717.08, 188,684.16 and 76,308.72

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Solution

The fourth proportional to 136,717.08, 188,684.16 and 76,308.72 is: 105,314.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,717.08 : 188,684.16 = 76,308.72 : x
  2. Step 2: Convert to fraction form
    136,717.08/188,684.16 = 76,308.72/x
  3. Step 3: Cross multiply
    136,717.08x = 188,684.16 × 76,308.72
  4. Step 4: Simplify right side
    136,717.08x = 14,398,246,733.88
  5. Step 5: Solve for x
    x = 14,398,246,733.88/136,717.08
  6. Step 6: Final answer
    x = 105,314.18

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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.