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Finding the Fourth Proportional to 172,293.59, 237,730.30 and 100,659.78

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Solution

The fourth proportional to 172,293.59, 237,730.30 and 100,659.78 is: 138,890.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,293.59 : 237,730.30 = 100,659.78 : x
  2. Step 2: Convert to fraction form
    172,293.59/237,730.30 = 100,659.78/x
  3. Step 3: Cross multiply
    172,293.59x = 237,730.30 × 100,659.78
  4. Step 4: Simplify right side
    172,293.59x = 23,929,878,508.68
  5. Step 5: Solve for x
    x = 23,929,878,508.68/172,293.59
  6. Step 6: Final answer
    x = 138,890.13

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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.