Home / 157,742.46-217,676.30-86,108.63

Finding the Fourth Proportional to 157,742.46, 217,676.30 and 86,108.63

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Solution

The fourth proportional to 157,742.46, 217,676.30 and 86,108.63 is: 118,825.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,742.46 : 217,676.30 = 86,108.63 : x
  2. Step 2: Convert to fraction form
    157,742.46/217,676.30 = 86,108.63/x
  3. Step 3: Cross multiply
    157,742.46x = 217,676.30 × 86,108.63
  4. Step 4: Simplify right side
    157,742.46x = 18,743,806,457.54
  5. Step 5: Solve for x
    x = 18,743,806,457.54/157,742.46
  6. Step 6: Final answer
    x = 118,825.37

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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.