Home / 137,096,478.68-189,193,140.57-78,360,404.93

Finding the Fourth Proportional to 137,096,478.68, 189,193,140.57 and 78,360,404.93

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Solution

The fourth proportional to 137,096,478.68, 189,193,140.57 and 78,360,404.93 is: 108,137,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,096,478.68 : 189,193,140.57 = 78,360,404.93 : x
  2. Step 2: Convert to fraction form
    137,096,478.68/189,193,140.57 = 78,360,404.93/x
  3. Step 3: Cross multiply
    137,096,478.68x = 189,193,140.57 × 78,360,404.93
  4. Step 4: Simplify right side
    137,096,478.68x = 14,825,251,104,097,644
  5. Step 5: Solve for x
    x = 14,825,251,104,097,644/137,096,478.68
  6. Step 6: Final answer
    x = 108,137,358.80

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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.