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Finding the Fourth Proportional to 172,990.08, 238,671.36 and 101,347.20

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Solution

The fourth proportional to 172,990.08, 238,671.36 and 101,347.20 is: 139,826.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,990.08 : 238,671.36 = 101,347.20 : x
  2. Step 2: Convert to fraction form
    172,990.08/238,671.36 = 101,347.20/x
  3. Step 3: Cross multiply
    172,990.08x = 238,671.36 × 101,347.20
  4. Step 4: Simplify right side
    172,990.08x = 24,188,674,056.19
  5. Step 5: Solve for x
    x = 24,188,674,056.19/172,990.08
  6. Step 6: Final answer
    x = 139,826.94

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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.