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Finding the Fourth Proportional to 141,797.55, 195,684.80 and 78,139.45

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Solution

The fourth proportional to 141,797.55, 195,684.80 and 78,139.45 is: 107,834.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,797.55 : 195,684.80 = 78,139.45 : x
  2. Step 2: Convert to fraction form
    141,797.55/195,684.80 = 78,139.45/x
  3. Step 3: Cross multiply
    141,797.55x = 195,684.80 × 78,139.45
  4. Step 4: Simplify right side
    141,797.55x = 15,290,702,645.36
  5. Step 5: Solve for x
    x = 15,290,702,645.36/141,797.55
  6. Step 6: Final answer
    x = 107,834.74

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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.