Home / 126,029,384.60-189,044,076.90-80,642,427.80

Finding the Fourth Proportional to 126,029,384.60, 189,044,076.90 and 80,642,427.80

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Solution

The fourth proportional to 126,029,384.60, 189,044,076.90 and 80,642,427.80 is: 120,963,641.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,029,384.60 : 189,044,076.90 = 80,642,427.80 : x
  2. Step 2: Convert to fraction form
    126,029,384.60/189,044,076.90 = 80,642,427.80/x
  3. Step 3: Cross multiply
    126,029,384.60x = 189,044,076.90 × 80,642,427.80
  4. Step 4: Simplify right side
    126,029,384.60x = 15,244,973,322,425,898
  5. Step 5: Solve for x
    x = 15,244,973,322,425,898/126,029,384.60
  6. Step 6: Final answer
    x = 120,963,641.70

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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.