Home / 140,753.12-194,232.08-77,078.60

Finding the Fourth Proportional to 140,753.12, 194,232.08 and 77,078.60

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Solution

The fourth proportional to 140,753.12, 194,232.08 and 77,078.60 is: 106,364.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,753.12 : 194,232.08 = 77,078.60 : x
  2. Step 2: Convert to fraction form
    140,753.12/194,232.08 = 77,078.60/x
  3. Step 3: Cross multiply
    140,753.12x = 194,232.08 × 77,078.60
  4. Step 4: Simplify right side
    140,753.12x = 14,971,136,801.49
  5. Step 5: Solve for x
    x = 14,971,136,801.49/140,753.12
  6. Step 6: Final answer
    x = 106,364.51

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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.