Home / 131,343.21-181,253.48-77,647.59

Finding the Fourth Proportional to 131,343.21, 181,253.48 and 77,647.59

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Solution

The fourth proportional to 131,343.21, 181,253.48 and 77,647.59 is: 107,153.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,343.21 : 181,253.48 = 77,647.59 : x
  2. Step 2: Convert to fraction form
    131,343.21/181,253.48 = 77,647.59/x
  3. Step 3: Cross multiply
    131,343.21x = 181,253.48 × 77,647.59
  4. Step 4: Simplify right side
    131,343.21x = 14,073,895,512.88
  5. Step 5: Solve for x
    x = 14,073,895,512.88/131,343.21
  6. Step 6: Final answer
    x = 107,153.58

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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.