Home / 141,395.76-195,131.16-77,738.40

Finding the Fourth Proportional to 141,395.76, 195,131.16 and 77,738.40

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Solution

The fourth proportional to 141,395.76, 195,131.16 and 77,738.40 is: 107,281.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,395.76 : 195,131.16 = 77,738.40 : x
  2. Step 2: Convert to fraction form
    141,395.76/195,131.16 = 77,738.40/x
  3. Step 3: Cross multiply
    141,395.76x = 195,131.16 × 77,738.40
  4. Step 4: Simplify right side
    141,395.76x = 15,169,184,168.54
  5. Step 5: Solve for x
    x = 15,169,184,168.54/141,395.76
  6. Step 6: Final answer
    x = 107,281.75

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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.