Home / 126,005,979.20-189,008,968.80-100,496,811.20

Finding the Fourth Proportional to 126,005,979.20, 189,008,968.80 and 100,496,811.20

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Solution

The fourth proportional to 126,005,979.20, 189,008,968.80 and 100,496,811.20 is: 150,745,216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,005,979.20 : 189,008,968.80 = 100,496,811.20 : x
  2. Step 2: Convert to fraction form
    126,005,979.20/189,008,968.80 = 100,496,811.20/x
  3. Step 3: Cross multiply
    126,005,979.20x = 189,008,968.80 × 100,496,811.20
  4. Step 4: Simplify right side
    126,005,979.20x = 18,994,798,652,600,292
  5. Step 5: Solve for x
    x = 18,994,798,652,600,292/126,005,979.20
  6. Step 6: Final answer
    x = 150,745,216.80

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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.