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Finding the Fourth Proportional to 138,802.74, 208,203.57 and 33,621.54

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Solution

The fourth proportional to 138,802.74, 208,203.57 and 33,621.54 is: 50,432.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,802.74 : 208,203.57 = 33,621.54 : x
  2. Step 2: Convert to fraction form
    138,802.74/208,203.57 = 33,621.54/x
  3. Step 3: Cross multiply
    138,802.74x = 208,203.57 × 33,621.54
  4. Step 4: Simplify right side
    138,802.74x = 7,000,124,656.90
  5. Step 5: Solve for x
    x = 7,000,124,656.90/138,802.74
  6. Step 6: Final answer
    x = 50,432.18

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1.5x scale

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.