Home / 141,378.06-195,099.51-77,714.49

Finding the Fourth Proportional to 141,378.06, 195,099.51 and 77,714.49

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Solution

The fourth proportional to 141,378.06, 195,099.51 and 77,714.49 is: 107,244.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,378.06 : 195,099.51 = 77,714.49 : x
  2. Step 2: Convert to fraction form
    141,378.06/195,099.51 = 77,714.49/x
  3. Step 3: Cross multiply
    141,378.06x = 195,099.51 × 77,714.49
  4. Step 4: Simplify right side
    141,378.06x = 15,162,058,918.90
  5. Step 5: Solve for x
    x = 15,162,058,918.90/141,378.06
  6. Step 6: Final answer
    x = 107,244.78

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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.