Home / 141,091.12-194,708.37-77,431.20

Finding the Fourth Proportional to 141,091.12, 194,708.37 and 77,431.20

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Solution

The fourth proportional to 141,091.12, 194,708.37 and 77,431.20 is: 106,856.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,091.12 : 194,708.37 = 77,431.20 : x
  2. Step 2: Convert to fraction form
    141,091.12/194,708.37 = 77,431.20/x
  3. Step 3: Cross multiply
    141,091.12x = 194,708.37 × 77,431.20
  4. Step 4: Simplify right side
    141,091.12x = 15,076,502,739.14
  5. Step 5: Solve for x
    x = 15,076,502,739.14/141,091.12
  6. Step 6: Final answer
    x = 106,856.50

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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.