Home / 141,820.74-195,708.78-78,158.52

Finding the Fourth Proportional to 141,820.74, 195,708.78 and 78,158.52

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Solution

The fourth proportional to 141,820.74, 195,708.78 and 78,158.52 is: 107,856.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,820.74 : 195,708.78 = 78,158.52 : x
  2. Step 2: Convert to fraction form
    141,820.74/195,708.78 = 78,158.52/x
  3. Step 3: Cross multiply
    141,820.74x = 195,708.78 × 78,158.52
  4. Step 4: Simplify right side
    141,820.74x = 15,296,308,595.81
  5. Step 5: Solve for x
    x = 15,296,308,595.81/141,820.74
  6. Step 6: Final answer
    x = 107,856.64

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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.