Home / 157,318.77-217,102.28-85,698.75

Finding the Fourth Proportional to 157,318.77, 217,102.28 and 85,698.75

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Solution

The fourth proportional to 157,318.77, 217,102.28 and 85,698.75 is: 118,265.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,318.77 : 217,102.28 = 85,698.75 : x
  2. Step 2: Convert to fraction form
    157,318.77/217,102.28 = 85,698.75/x
  3. Step 3: Cross multiply
    157,318.77x = 217,102.28 × 85,698.75
  4. Step 4: Simplify right side
    157,318.77x = 18,605,393,589.66
  5. Step 5: Solve for x
    x = 18,605,393,589.66/157,318.77
  6. Step 6: Final answer
    x = 118,265.57

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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.