Home / 141,678.75-195,516.68-78,016.40

Finding the Fourth Proportional to 141,678.75, 195,516.68 and 78,016.40

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Solution

The fourth proportional to 141,678.75, 195,516.68 and 78,016.40 is: 107,662.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,678.75 : 195,516.68 = 78,016.40 : x
  2. Step 2: Convert to fraction form
    141,678.75/195,516.68 = 78,016.40/x
  3. Step 3: Cross multiply
    141,678.75x = 195,516.68 × 78,016.40
  4. Step 4: Simplify right side
    141,678.75x = 15,253,506,145.89
  5. Step 5: Solve for x
    x = 15,253,506,145.89/141,678.75
  6. Step 6: Final answer
    x = 107,662.63

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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.