Home / 157,943.34-217,961.28-86,323.32

Finding the Fourth Proportional to 157,943.34, 217,961.28 and 86,323.32

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Solution

The fourth proportional to 157,943.34, 217,961.28 and 86,323.32 is: 119,125.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,943.34 : 217,961.28 = 86,323.32 : x
  2. Step 2: Convert to fraction form
    157,943.34/217,961.28 = 86,323.32/x
  3. Step 3: Cross multiply
    157,943.34x = 217,961.28 × 86,323.32
  4. Step 4: Simplify right side
    157,943.34x = 18,815,141,321.05
  5. Step 5: Solve for x
    x = 18,815,141,321.05/157,943.34
  6. Step 6: Final answer
    x = 119,125.89

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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.