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Finding the Fourth Proportional to 172,868, 238,557.84 and 93,380

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Solution

The fourth proportional to 172,868, 238,557.84 and 93,380 is: 128,864.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,868 : 238,557.84 = 93,380 : x
  2. Step 2: Convert to fraction form
    172,868/238,557.84 = 93,380/x
  3. Step 3: Cross multiply
    172,868x = 238,557.84 × 93,380
  4. Step 4: Simplify right side
    172,868x = 22,276,531,099.20
  5. Step 5: Solve for x
    x = 22,276,531,099.20/172,868
  6. Step 6: Final answer
    x = 128,864.40

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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.