Home / 126,145,187.20-189,217,780.80-45,355,657.60

Finding the Fourth Proportional to 126,145,187.20, 189,217,780.80 and 45,355,657.60

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Solution

The fourth proportional to 126,145,187.20, 189,217,780.80 and 45,355,657.60 is: 68,033,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,145,187.20 : 189,217,780.80 = 45,355,657.60 : x
  2. Step 2: Convert to fraction form
    126,145,187.20/189,217,780.80 = 45,355,657.60/x
  3. Step 3: Cross multiply
    126,145,187.20x = 189,217,780.80 × 45,355,657.60
  4. Step 4: Simplify right side
    126,145,187.20x = 8,582,096,877,796,655
  5. Step 5: Solve for x
    x = 8,582,096,877,796,655/126,145,187.20
  6. Step 6: Final answer
    x = 68,033,486.40

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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.