Home / 137,096,478.36-189,193,140.13-78,360,404.62

Finding the Fourth Proportional to 137,096,478.36, 189,193,140.13 and 78,360,404.62

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Solution

The fourth proportional to 137,096,478.36, 189,193,140.13 and 78,360,404.62 is: 108,137,358.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,096,478.36 : 189,193,140.13 = 78,360,404.62 : x
  2. Step 2: Convert to fraction form
    137,096,478.36/189,193,140.13 = 78,360,404.62/x
  3. Step 3: Cross multiply
    137,096,478.36x = 189,193,140.13 × 78,360,404.62
  4. Step 4: Simplify right side
    137,096,478.36x = 14,825,251,010,969,192
  5. Step 5: Solve for x
    x = 14,825,251,010,969,192/137,096,478.36
  6. Step 6: Final answer
    x = 108,137,358.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.