Home / 141,679.30-195,518.70-78,017.34

Finding the Fourth Proportional to 141,679.30, 195,518.70 and 78,017.34

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Solution

The fourth proportional to 141,679.30, 195,518.70 and 78,017.34 is: 107,664.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,679.30 : 195,518.70 = 78,017.34 : x
  2. Step 2: Convert to fraction form
    141,679.30/195,518.70 = 78,017.34/x
  3. Step 3: Cross multiply
    141,679.30x = 195,518.70 × 78,017.34
  4. Step 4: Simplify right side
    141,679.30x = 15,253,848,894.26
  5. Step 5: Solve for x
    x = 15,253,848,894.26/141,679.30
  6. Step 6: Final answer
    x = 107,664.63

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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.