Home / 141,378.95-195,103.59-77,720.85

Finding the Fourth Proportional to 141,378.95, 195,103.59 and 77,720.85

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Solution

The fourth proportional to 141,378.95, 195,103.59 and 77,720.85 is: 107,255.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,378.95 : 195,103.59 = 77,720.85 : x
  2. Step 2: Convert to fraction form
    141,378.95/195,103.59 = 77,720.85/x
  3. Step 3: Cross multiply
    141,378.95x = 195,103.59 × 77,720.85
  4. Step 4: Simplify right side
    141,378.95x = 15,163,616,561.40
  5. Step 5: Solve for x
    x = 15,163,616,561.40/141,378.95
  6. Step 6: Final answer
    x = 107,255.12

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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.