Home / 138,790,609.82-191,524,471.08-83,066,732.72

Finding the Fourth Proportional to 138,790,609.82, 191,524,471.08 and 83,066,732.72

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Solution

The fourth proportional to 138,790,609.82, 191,524,471.08 and 83,066,732.72 is: 114,628,158.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,790,609.82 : 191,524,471.08 = 83,066,732.72 : x
  2. Step 2: Convert to fraction form
    138,790,609.82/191,524,471.08 = 83,066,732.72/x
  3. Step 3: Cross multiply
    138,790,609.82x = 191,524,471.08 × 83,066,732.72
  4. Step 4: Simplify right side
    138,790,609.82x = 15,909,312,048,541,730
  5. Step 5: Solve for x
    x = 15,909,312,048,541,730/138,790,609.82
  6. Step 6: Final answer
    x = 114,628,158.70

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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.