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Finding the Fourth Proportional to 172,952.34, 238,663.93 and 100,349.61

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Solution

The fourth proportional to 172,952.34, 238,663.93 and 100,349.61 is: 138,476.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,952.34 : 238,663.93 = 100,349.61 : x
  2. Step 2: Convert to fraction form
    172,952.34/238,663.93 = 100,349.61/x
  3. Step 3: Cross multiply
    172,952.34x = 238,663.93 × 100,349.61
  4. Step 4: Simplify right side
    172,952.34x = 23,949,832,296.57
  5. Step 5: Solve for x
    x = 23,949,832,296.57/172,952.34
  6. Step 6: Final answer
    x = 138,476.49

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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.