Home / 157,960.41-217,985.37-86,340.71

Finding the Fourth Proportional to 157,960.41, 217,985.37 and 86,340.71

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Solution

The fourth proportional to 157,960.41, 217,985.37 and 86,340.71 is: 119,150.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,960.41 : 217,985.37 = 86,340.71 : x
  2. Step 2: Convert to fraction form
    157,960.41/217,985.37 = 86,340.71/x
  3. Step 3: Cross multiply
    157,960.41x = 217,985.37 × 86,340.71
  4. Step 4: Simplify right side
    157,960.41x = 18,821,011,836.60
  5. Step 5: Solve for x
    x = 18,821,011,836.60/157,960.41
  6. Step 6: Final answer
    x = 119,150.19

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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.