Home / 157,487.89-217,329.36-85,869.31

Finding the Fourth Proportional to 157,487.89, 217,329.36 and 85,869.31

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Solution

The fourth proportional to 157,487.89, 217,329.36 and 85,869.31 is: 118,497.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,487.89 : 217,329.36 = 85,869.31 : x
  2. Step 2: Convert to fraction form
    157,487.89/217,329.36 = 85,869.31/x
  3. Step 3: Cross multiply
    157,487.89x = 217,329.36 × 85,869.31
  4. Step 4: Simplify right side
    157,487.89x = 18,661,922,185.94
  5. Step 5: Solve for x
    x = 18,661,922,185.94/157,487.89
  6. Step 6: Final answer
    x = 118,497.51

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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.