Home / 140,720.40-194,188.32-77,057.10

Finding the Fourth Proportional to 140,720.40, 194,188.32 and 77,057.10

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Solution

The fourth proportional to 140,720.40, 194,188.32 and 77,057.10 is: 106,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,720.40 : 194,188.32 = 77,057.10 : x
  2. Step 2: Convert to fraction form
    140,720.40/194,188.32 = 77,057.10/x
  3. Step 3: Cross multiply
    140,720.40x = 194,188.32 × 77,057.10
  4. Step 4: Simplify right side
    140,720.40x = 14,963,588,793.07
  5. Step 5: Solve for x
    x = 14,963,588,793.07/140,720.40
  6. Step 6: Final answer
    x = 106,335.60

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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.