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Finding the Fourth Proportional to 141,753, 195,617.04 and 78,090.84

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Solution

The fourth proportional to 141,753, 195,617.04 and 78,090.84 is: 107,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,753 : 195,617.04 = 78,090.84 : x
  2. Step 2: Convert to fraction form
    141,753/195,617.04 = 78,090.84/x
  3. Step 3: Cross multiply
    141,753x = 195,617.04 × 78,090.84
  4. Step 4: Simplify right side
    141,753x = 15,275,898,971.91
  5. Step 5: Solve for x
    x = 15,275,898,971.91/141,753
  6. Step 6: Final answer
    x = 107,764.20

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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.