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Finding the Fourth Proportional to 138,841.37, 208,345.41 and 59,955.60

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Solution

The fourth proportional to 138,841.37, 208,345.41 and 59,955.60 is: 89,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,841.37 : 208,345.41 = 59,955.60 : x
  2. Step 2: Convert to fraction form
    138,841.37/208,345.41 = 59,955.60/x
  3. Step 3: Cross multiply
    138,841.37x = 208,345.41 × 59,955.60
  4. Step 4: Simplify right side
    138,841.37x = 12,491,474,063.80
  5. Step 5: Solve for x
    x = 12,491,474,063.80/138,841.37
  6. Step 6: Final answer
    x = 89,969.40

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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.