Home / 141,872.16-195,783.60-78,209.28

Finding the Fourth Proportional to 141,872.16, 195,783.60 and 78,209.28

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Solution

The fourth proportional to 141,872.16, 195,783.60 and 78,209.28 is: 107,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,872.16 : 195,783.60 = 78,209.28 : x
  2. Step 2: Convert to fraction form
    141,872.16/195,783.60 = 78,209.28/x
  3. Step 3: Cross multiply
    141,872.16x = 195,783.60 × 78,209.28
  4. Step 4: Simplify right side
    141,872.16x = 15,312,094,391.81
  5. Step 5: Solve for x
    x = 15,312,094,391.81/141,872.16
  6. Step 6: Final answer
    x = 107,928.82

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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.