Home / 138,140,081.80-207,107,970.35-83,540,528.90

Finding the Fourth Proportional to 138,140,081.80, 207,107,970.35 and 83,540,528.90

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Solution

The fourth proportional to 138,140,081.80, 207,107,970.35 and 83,540,528.90 is: 125,249,016.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,140,081.80 : 207,107,970.35 = 83,540,528.90 : x
  2. Step 2: Convert to fraction form
    138,140,081.80/207,107,970.35 = 83,540,528.90/x
  3. Step 3: Cross multiply
    138,140,081.80x = 207,107,970.35 × 83,540,528.90
  4. Step 4: Simplify right side
    138,140,081.80x = 17,301,909,383,014,918
  5. Step 5: Solve for x
    x = 17,301,909,383,014,918/138,140,081.80
  6. Step 6: Final answer
    x = 125,249,016.49

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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.