Home / 126,145,331.20-189,217,996.80-45,355,801.60

Finding the Fourth Proportional to 126,145,331.20, 189,217,996.80 and 45,355,801.60

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Solution

The fourth proportional to 126,145,331.20, 189,217,996.80 and 45,355,801.60 is: 68,033,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,145,331.20 : 189,217,996.80 = 45,355,801.60 : x
  2. Step 2: Convert to fraction form
    126,145,331.20/189,217,996.80 = 45,355,801.60/x
  3. Step 3: Cross multiply
    126,145,331.20x = 189,217,996.80 × 45,355,801.60
  4. Step 4: Simplify right side
    126,145,331.20x = 8,582,133,922,010,236
  5. Step 5: Solve for x
    x = 8,582,133,922,010,236/126,145,331.20
  6. Step 6: Final answer
    x = 68,033,702.40

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Similar ratio
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1.5x scale

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.