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Finding the Fourth Proportional to 172,807.12, 238,478.88 and 101,180.44

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Solution

The fourth proportional to 172,807.12, 238,478.88 and 101,180.44 is: 139,631.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,807.12 : 238,478.88 = 101,180.44 : x
  2. Step 2: Convert to fraction form
    172,807.12/238,478.88 = 101,180.44/x
  3. Step 3: Cross multiply
    172,807.12x = 238,478.88 × 101,180.44
  4. Step 4: Simplify right side
    172,807.12x = 24,129,398,009.11
  5. Step 5: Solve for x
    x = 24,129,398,009.11/172,807.12
  6. Step 6: Final answer
    x = 139,631.97

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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.