Home / 126,029,276.60-189,043,914.90-80,642,319.80

Finding the Fourth Proportional to 126,029,276.60, 189,043,914.90 and 80,642,319.80

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Solution

The fourth proportional to 126,029,276.60, 189,043,914.90 and 80,642,319.80 is: 120,963,479.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,029,276.60 : 189,043,914.90 = 80,642,319.80 : x
  2. Step 2: Convert to fraction form
    126,029,276.60/189,043,914.90 = 80,642,319.80/x
  3. Step 3: Cross multiply
    126,029,276.60x = 189,043,914.90 × 80,642,319.80
  4. Step 4: Simplify right side
    126,029,276.60x = 15,244,939,841,609,784
  5. Step 5: Solve for x
    x = 15,244,939,841,609,784/126,029,276.60
  6. Step 6: Final answer
    x = 120,963,479.70

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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.