Home / 126,343,979.60-189,515,969.40-45,564,947.60

Finding the Fourth Proportional to 126,343,979.60, 189,515,969.40 and 45,564,947.60

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Solution

The fourth proportional to 126,343,979.60, 189,515,969.40 and 45,564,947.60 is: 68,347,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,343,979.60 : 189,515,969.40 = 45,564,947.60 : x
  2. Step 2: Convert to fraction form
    126,343,979.60/189,515,969.40 = 45,564,947.60/x
  3. Step 3: Cross multiply
    126,343,979.60x = 189,515,969.40 × 45,564,947.60
  4. Step 4: Simplify right side
    126,343,979.60x = 8,635,285,215,074,204
  5. Step 5: Solve for x
    x = 8,635,285,215,074,204/126,343,979.60
  6. Step 6: Final answer
    x = 68,347,421.40

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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.