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Finding the Fourth Proportional to 172,894.88, 238,613.92 and 100,313.76

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Solution

The fourth proportional to 172,894.88, 238,613.92 and 100,313.76 is: 138,444.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,894.88 : 238,613.92 = 100,313.76 : x
  2. Step 2: Convert to fraction form
    172,894.88/238,613.92 = 100,313.76/x
  3. Step 3: Cross multiply
    172,894.88x = 238,613.92 × 100,313.76
  4. Step 4: Simplify right side
    172,894.88x = 23,936,259,503.54
  5. Step 5: Solve for x
    x = 23,936,259,503.54/172,894.88
  6. Step 6: Final answer
    x = 138,444.00

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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.