Home / 141,828.81-195,723.35-78,166.59

Finding the Fourth Proportional to 141,828.81, 195,723.35 and 78,166.59

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Solution

The fourth proportional to 141,828.81, 195,723.35 and 78,166.59 is: 107,869.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,828.81 : 195,723.35 = 78,166.59 : x
  2. Step 2: Convert to fraction form
    141,828.81/195,723.35 = 78,166.59/x
  3. Step 3: Cross multiply
    141,828.81x = 195,723.35 × 78,166.59
  4. Step 4: Simplify right side
    141,828.81x = 15,299,025,483.43
  5. Step 5: Solve for x
    x = 15,299,025,483.43/141,828.81
  6. Step 6: Final answer
    x = 107,869.66

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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.