Home / 132,912,109.10-199,368,163.66-78,268,601.90

Finding the Fourth Proportional to 132,912,109.10, 199,368,163.66 and 78,268,601.90

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Solution

The fourth proportional to 132,912,109.10, 199,368,163.66 and 78,268,601.90 is: 117,402,902.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,912,109.10 : 199,368,163.66 = 78,268,601.90 : x
  2. Step 2: Convert to fraction form
    132,912,109.10/199,368,163.66 = 78,268,601.90/x
  3. Step 3: Cross multiply
    132,912,109.10x = 199,368,163.66 × 78,268,601.90
  4. Step 4: Simplify right side
    132,912,109.10x = 15,604,267,433,038,588
  5. Step 5: Solve for x
    x = 15,604,267,433,038,588/132,912,109.10
  6. Step 6: Final answer
    x = 117,402,902.86

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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.