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Finding the Fourth Proportional to 172,316.94, 237,809.43 and 100,704.84

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Solution

The fourth proportional to 172,316.94, 237,809.43 and 100,704.84 is: 138,979.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,316.94 : 237,809.43 = 100,704.84 : x
  2. Step 2: Convert to fraction form
    172,316.94/237,809.43 = 100,704.84/x
  3. Step 3: Cross multiply
    172,316.94x = 237,809.43 × 100,704.84
  4. Step 4: Simplify right side
    172,316.94x = 23,948,560,598.64
  5. Step 5: Solve for x
    x = 23,948,560,598.64/172,316.94
  6. Step 6: Final answer
    x = 138,979.72

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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.