Home / 157,257.10-217,017.39-85,638.52

Finding the Fourth Proportional to 157,257.10, 217,017.39 and 85,638.52

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Solution

The fourth proportional to 157,257.10, 217,017.39 and 85,638.52 is: 118,182.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,257.10 : 217,017.39 = 85,638.52 : x
  2. Step 2: Convert to fraction form
    157,257.10/217,017.39 = 85,638.52/x
  3. Step 3: Cross multiply
    157,257.10x = 217,017.39 × 85,638.52
  4. Step 4: Simplify right side
    157,257.10x = 18,585,048,093.86
  5. Step 5: Solve for x
    x = 18,585,048,093.86/157,257.10
  6. Step 6: Final answer
    x = 118,182.57

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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.