Home / 157,880.31-217,877.97-86,264.78

Finding the Fourth Proportional to 157,880.31, 217,877.97 and 86,264.78

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Solution

The fourth proportional to 157,880.31, 217,877.97 and 86,264.78 is: 119,047.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,880.31 : 217,877.97 = 86,264.78 : x
  2. Step 2: Convert to fraction form
    157,880.31/217,877.97 = 86,264.78/x
  3. Step 3: Cross multiply
    157,880.31x = 217,877.97 × 86,264.78
  4. Step 4: Simplify right side
    157,880.31x = 18,795,194,059.51
  5. Step 5: Solve for x
    x = 18,795,194,059.51/157,880.31
  6. Step 6: Final answer
    x = 119,047.11

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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.