Home / 128,854.08-193,336.74-69,731.46

Finding the Fourth Proportional to 128,854.08, 193,336.74 and 69,731.46

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Solution

The fourth proportional to 128,854.08, 193,336.74 and 69,731.46 is: 104,627.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,854.08 : 193,336.74 = 69,731.46 : x
  2. Step 2: Convert to fraction form
    128,854.08/193,336.74 = 69,731.46/x
  3. Step 3: Cross multiply
    128,854.08x = 193,336.74 × 69,731.46
  4. Step 4: Simplify right side
    128,854.08x = 13,481,653,151.84
  5. Step 5: Solve for x
    x = 13,481,653,151.84/128,854.08
  6. Step 6: Final answer
    x = 104,627.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.