Home / 157,386.22-217,186.66-85,764.71

Finding the Fourth Proportional to 157,386.22, 217,186.66 and 85,764.71

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Solution

The fourth proportional to 157,386.22, 217,186.66 and 85,764.71 is: 118,351.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,386.22 : 217,186.66 = 85,764.71 : x
  2. Step 2: Convert to fraction form
    157,386.22/217,186.66 = 85,764.71/x
  3. Step 3: Cross multiply
    157,386.22x = 217,186.66 × 85,764.71
  4. Step 4: Simplify right side
    157,386.22x = 18,626,949,824.84
  5. Step 5: Solve for x
    x = 18,626,949,824.84/157,386.22
  6. Step 6: Final answer
    x = 118,351.85

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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.