Home / 141,430.94-195,178.05-77,768.69

Finding the Fourth Proportional to 141,430.94, 195,178.05 and 77,768.69

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Solution

The fourth proportional to 141,430.94, 195,178.05 and 77,768.69 is: 107,322.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,430.94 : 195,178.05 = 77,768.69 : x
  2. Step 2: Convert to fraction form
    141,430.94/195,178.05 = 77,768.69/x
  3. Step 3: Cross multiply
    141,430.94x = 195,178.05 × 77,768.69
  4. Step 4: Simplify right side
    141,430.94x = 15,178,741,021.28
  5. Step 5: Solve for x
    x = 15,178,741,021.28/141,430.94
  6. Step 6: Final answer
    x = 107,322.63

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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.