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Finding the Fourth Proportional to 101,146.57, 139,207.76 and 74,246.47

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Solution

The fourth proportional to 101,146.57, 139,207.76 and 74,246.47 is: 102,185.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,146.57 : 139,207.76 = 74,246.47 : x
  2. Step 2: Convert to fraction form
    101,146.57/139,207.76 = 74,246.47/x
  3. Step 3: Cross multiply
    101,146.57x = 139,207.76 × 74,246.47
  4. Step 4: Simplify right side
    101,146.57x = 10,335,684,405.37
  5. Step 5: Solve for x
    x = 10,335,684,405.37/101,146.57
  6. Step 6: Final answer
    x = 102,185.22

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1.5x scale

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.