Home / 141,918.81-195,847.65-78,256.86

Finding the Fourth Proportional to 141,918.81, 195,847.65 and 78,256.86

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Solution

The fourth proportional to 141,918.81, 195,847.65 and 78,256.86 is: 107,994.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,918.81 : 195,847.65 = 78,256.86 : x
  2. Step 2: Convert to fraction form
    141,918.81/195,847.65 = 78,256.86/x
  3. Step 3: Cross multiply
    141,918.81x = 195,847.65 × 78,256.86
  4. Step 4: Simplify right side
    141,918.81x = 15,326,422,127.38
  5. Step 5: Solve for x
    x = 15,326,422,127.38/141,918.81
  6. Step 6: Final answer
    x = 107,994.30

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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.