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Finding the Fourth Proportional to 172,920.38, 238,630.12 and 97,468.88

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Solution

The fourth proportional to 172,920.38, 238,630.12 and 97,468.88 is: 134,507.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,920.38 : 238,630.12 = 97,468.88 : x
  2. Step 2: Convert to fraction form
    172,920.38/238,630.12 = 97,468.88/x
  3. Step 3: Cross multiply
    172,920.38x = 238,630.12 × 97,468.88
  4. Step 4: Simplify right side
    172,920.38x = 23,259,009,093.84
  5. Step 5: Solve for x
    x = 23,259,009,093.84/172,920.38
  6. Step 6: Final answer
    x = 134,507.05

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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.