Home / 157,749.31-217,684.42-86,125.06

Finding the Fourth Proportional to 157,749.31, 217,684.42 and 86,125.06

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Solution

The fourth proportional to 157,749.31, 217,684.42 and 86,125.06 is: 118,847.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,749.31 : 217,684.42 = 86,125.06 : x
  2. Step 2: Convert to fraction form
    157,749.31/217,684.42 = 86,125.06/x
  3. Step 3: Cross multiply
    157,749.31x = 217,684.42 × 86,125.06
  4. Step 4: Simplify right side
    157,749.31x = 18,748,083,733.57
  5. Step 5: Solve for x
    x = 18,748,083,733.57/157,749.31
  6. Step 6: Final answer
    x = 118,847.33

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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.