Home / 156,921.78-216,556.80-88,938.90

Finding the Fourth Proportional to 156,921.78, 216,556.80 and 88,938.90

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Solution

The fourth proportional to 156,921.78, 216,556.80 and 88,938.90 is: 122,738.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,921.78 : 216,556.80 = 88,938.90 : x
  2. Step 2: Convert to fraction form
    156,921.78/216,556.80 = 88,938.90/x
  3. Step 3: Cross multiply
    156,921.78x = 216,556.80 × 88,938.90
  4. Step 4: Simplify right side
    156,921.78x = 19,260,323,579.52
  5. Step 5: Solve for x
    x = 19,260,323,579.52/156,921.78
  6. Step 6: Final answer
    x = 122,738.37

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1.5x scale

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.