Home / 138,140,089.77-207,107,982.31-83,540,536.86

Finding the Fourth Proportional to 138,140,089.77, 207,107,982.31 and 83,540,536.86

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Solution

The fourth proportional to 138,140,089.77, 207,107,982.31 and 83,540,536.86 is: 125,249,028.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,140,089.77 : 207,107,982.31 = 83,540,536.86 : x
  2. Step 2: Convert to fraction form
    138,140,089.77/207,107,982.31 = 83,540,536.86/x
  3. Step 3: Cross multiply
    138,140,089.77x = 207,107,982.31 × 83,540,536.86
  4. Step 4: Simplify right side
    138,140,089.77x = 17,301,912,030,168,784
  5. Step 5: Solve for x
    x = 17,301,912,030,168,784/138,140,089.77
  6. Step 6: Final answer
    x = 125,249,028.42

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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.