Home / 126,029,381.60-189,044,072.40-80,642,424.80

Finding the Fourth Proportional to 126,029,381.60, 189,044,072.40 and 80,642,424.80

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Solution

The fourth proportional to 126,029,381.60, 189,044,072.40 and 80,642,424.80 is: 120,963,637.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,029,381.60 : 189,044,072.40 = 80,642,424.80 : x
  2. Step 2: Convert to fraction form
    126,029,381.60/189,044,072.40 = 80,642,424.80/x
  3. Step 3: Cross multiply
    126,029,381.60x = 189,044,072.40 × 80,642,424.80
  4. Step 4: Simplify right side
    126,029,381.60x = 15,244,972,392,402,756
  5. Step 5: Solve for x
    x = 15,244,972,392,402,756/126,029,381.60
  6. Step 6: Final answer
    x = 120,963,637.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.