Home / 157,140.78-216,928.44-100,584.96

Finding the Fourth Proportional to 157,140.78, 216,928.44 and 100,584.96

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Solution

The fourth proportional to 157,140.78, 216,928.44 and 100,584.96 is: 138,854.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,140.78 : 216,928.44 = 100,584.96 : x
  2. Step 2: Convert to fraction form
    157,140.78/216,928.44 = 100,584.96/x
  3. Step 3: Cross multiply
    157,140.78x = 216,928.44 × 100,584.96
  4. Step 4: Simplify right side
    157,140.78x = 21,819,738,460.26
  5. Step 5: Solve for x
    x = 21,819,738,460.26/157,140.78
  6. Step 6: Final answer
    x = 138,854.72

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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.