Home / 272,376.04-408,564.06-85,402.60

Finding the Fourth Proportional to 272,376.04, 408,564.06 and 85,402.60

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Solution

The fourth proportional to 272,376.04, 408,564.06 and 85,402.60 is: 128,103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,376.04 : 408,564.06 = 85,402.60 : x
  2. Step 2: Convert to fraction form
    272,376.04/408,564.06 = 85,402.60/x
  3. Step 3: Cross multiply
    272,376.04x = 408,564.06 × 85,402.60
  4. Step 4: Simplify right side
    272,376.04x = 34,892,432,990.56
  5. Step 5: Solve for x
    x = 34,892,432,990.56/272,376.04
  6. Step 6: Final answer
    x = 128,103.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.