Home / 141,680.76-195,519.74-78,018.68

Finding the Fourth Proportional to 141,680.76, 195,519.74 and 78,018.68

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Solution

The fourth proportional to 141,680.76, 195,519.74 and 78,018.68 is: 107,665.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,680.76 : 195,519.74 = 78,018.68 : x
  2. Step 2: Convert to fraction form
    141,680.76/195,519.74 = 78,018.68/x
  3. Step 3: Cross multiply
    141,680.76x = 195,519.74 × 78,018.68
  4. Step 4: Simplify right side
    141,680.76x = 15,254,192,028.74
  5. Step 5: Solve for x
    x = 15,254,192,028.74/141,680.76
  6. Step 6: Final answer
    x = 107,665.94

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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.