Home / 126,384,043.20-189,576,064.80-77,704,047.60

Finding the Fourth Proportional to 126,384,043.20, 189,576,064.80 and 77,704,047.60

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Solution

The fourth proportional to 126,384,043.20, 189,576,064.80 and 77,704,047.60 is: 116,556,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,384,043.20 : 189,576,064.80 = 77,704,047.60 : x
  2. Step 2: Convert to fraction form
    126,384,043.20/189,576,064.80 = 77,704,047.60/x
  3. Step 3: Cross multiply
    126,384,043.20x = 189,576,064.80 × 77,704,047.60
  4. Step 4: Simplify right side
    126,384,043.20x = 14,730,827,563,039,884
  5. Step 5: Solve for x
    x = 14,730,827,563,039,884/126,384,043.20
  6. Step 6: Final answer
    x = 116,556,071.40

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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.