Home / 157,634.80-217,541.27-86,018.75

Finding the Fourth Proportional to 157,634.80, 217,541.27 and 86,018.75

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Solution

The fourth proportional to 157,634.80, 217,541.27 and 86,018.75 is: 118,708.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,634.80 : 217,541.27 = 86,018.75 : x
  2. Step 2: Convert to fraction form
    157,634.80/217,541.27 = 86,018.75/x
  3. Step 3: Cross multiply
    157,634.80x = 217,541.27 × 86,018.75
  4. Step 4: Simplify right side
    157,634.80x = 18,712,627,578.08
  5. Step 5: Solve for x
    x = 18,712,627,578.08/157,634.80
  6. Step 6: Final answer
    x = 118,708.74

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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.