Home / 139,983,689.65-193,146,575.07-81,212,317.96

Finding the Fourth Proportional to 139,983,689.65, 193,146,575.07 and 81,212,317.96

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Solution

The fourth proportional to 139,983,689.65, 193,146,575.07 and 81,212,317.96 is: 112,055,062.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,983,689.65 : 193,146,575.07 = 81,212,317.96 : x
  2. Step 2: Convert to fraction form
    139,983,689.65/193,146,575.07 = 81,212,317.96/x
  3. Step 3: Cross multiply
    139,983,689.65x = 193,146,575.07 × 81,212,317.96
  4. Step 4: Simplify right side
    139,983,689.65x = 15,685,881,067,469,848
  5. Step 5: Solve for x
    x = 15,685,881,067,469,848/139,983,689.65
  6. Step 6: Final answer
    x = 112,055,062.32

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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.