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Finding the Fourth Proportional to 138,181.77, 207,272.66 and 76,245.93

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Solution

The fourth proportional to 138,181.77, 207,272.66 and 76,245.93 is: 114,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,181.77 : 207,272.66 = 76,245.93 : x
  2. Step 2: Convert to fraction form
    138,181.77/207,272.66 = 76,245.93/x
  3. Step 3: Cross multiply
    138,181.77x = 207,272.66 × 76,245.93
  4. Step 4: Simplify right side
    138,181.77x = 15,803,696,344.04
  5. Step 5: Solve for x
    x = 15,803,696,344.04/138,181.77
  6. Step 6: Final answer
    x = 114,368.90

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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.