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Finding the Fourth Proportional to 140,247.84, 193,671.36 and 90,034.32

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Solution

The fourth proportional to 140,247.84, 193,671.36 and 90,034.32 is: 124,330.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,247.84 : 193,671.36 = 90,034.32 : x
  2. Step 2: Convert to fraction form
    140,247.84/193,671.36 = 90,034.32/x
  3. Step 3: Cross multiply
    140,247.84x = 193,671.36 × 90,034.32
  4. Step 4: Simplify right side
    140,247.84x = 17,437,069,201.08
  5. Step 5: Solve for x
    x = 17,437,069,201.08/140,247.84
  6. Step 6: Final answer
    x = 124,330.39

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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.