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Finding the Fourth Proportional to 172,641.78, 238,154.22 and 118,833.30

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Solution

The fourth proportional to 172,641.78, 238,154.22 and 118,833.30 is: 163,927.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,641.78 : 238,154.22 = 118,833.30 : x
  2. Step 2: Convert to fraction form
    172,641.78/238,154.22 = 118,833.30/x
  3. Step 3: Cross multiply
    172,641.78x = 238,154.22 × 118,833.30
  4. Step 4: Simplify right side
    172,641.78x = 28,300,651,871.53
  5. Step 5: Solve for x
    x = 28,300,651,871.53/172,641.78
  6. Step 6: Final answer
    x = 163,927.02

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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.