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Finding the Fourth Proportional to 172,680.78, 238,316.54 and 101,056.54

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Solution

The fourth proportional to 172,680.78, 238,316.54 and 101,056.54 is: 139,468.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,680.78 : 238,316.54 = 101,056.54 : x
  2. Step 2: Convert to fraction form
    172,680.78/238,316.54 = 101,056.54/x
  3. Step 3: Cross multiply
    172,680.78x = 238,316.54 × 101,056.54
  4. Step 4: Simplify right side
    172,680.78x = 24,083,444,957.17
  5. Step 5: Solve for x
    x = 24,083,444,957.17/172,680.78
  6. Step 6: Final answer
    x = 139,468.01

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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.