Home / 136,869.91-188,999.37-85,971.13

Finding the Fourth Proportional to 136,869.91, 188,999.37 and 85,971.13

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Solution

The fourth proportional to 136,869.91, 188,999.37 and 85,971.13 is: 118,714.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,869.91 : 188,999.37 = 85,971.13 : x
  2. Step 2: Convert to fraction form
    136,869.91/188,999.37 = 85,971.13/x
  3. Step 3: Cross multiply
    136,869.91x = 188,999.37 × 85,971.13
  4. Step 4: Simplify right side
    136,869.91x = 16,248,489,408.19
  5. Step 5: Solve for x
    x = 16,248,489,408.19/136,869.91
  6. Step 6: Final answer
    x = 118,714.84

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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.