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Finding the Fourth Proportional to 141,392.92, 195,114.72 and 77,718.48

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Solution

The fourth proportional to 141,392.92, 195,114.72 and 77,718.48 is: 107,247.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,392.92 : 195,114.72 = 77,718.48 : x
  2. Step 2: Convert to fraction form
    141,392.92/195,114.72 = 77,718.48/x
  3. Step 3: Cross multiply
    141,392.92x = 195,114.72 × 77,718.48
  4. Step 4: Simplify right side
    141,392.92x = 15,164,019,464.03
  5. Step 5: Solve for x
    x = 15,164,019,464.03/141,392.92
  6. Step 6: Final answer
    x = 107,247.37

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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.