Home / 112,712.85-155,564.19-64,321.83

Finding the Fourth Proportional to 112,712.85, 155,564.19 and 64,321.83

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Solution

The fourth proportional to 112,712.85, 155,564.19 and 64,321.83 is: 88,775.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,712.85 : 155,564.19 = 64,321.83 : x
  2. Step 2: Convert to fraction form
    112,712.85/155,564.19 = 64,321.83/x
  3. Step 3: Cross multiply
    112,712.85x = 155,564.19 × 64,321.83
  4. Step 4: Simplify right side
    112,712.85x = 10,006,173,383.27
  5. Step 5: Solve for x
    x = 10,006,173,383.27/112,712.85
  6. Step 6: Final answer
    x = 88,775.80

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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.