Home / 132,912,147.60-199,368,221.40-78,268,640.40

Finding the Fourth Proportional to 132,912,147.60, 199,368,221.40 and 78,268,640.40

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Solution

The fourth proportional to 132,912,147.60, 199,368,221.40 and 78,268,640.40 is: 117,402,960.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,912,147.60 : 199,368,221.40 = 78,268,640.40 : x
  2. Step 2: Convert to fraction form
    132,912,147.60/199,368,221.40 = 78,268,640.40/x
  3. Step 3: Cross multiply
    132,912,147.60x = 199,368,221.40 × 78,268,640.40
  4. Step 4: Simplify right side
    132,912,147.60x = 15,604,279,627,944,186
  5. Step 5: Solve for x
    x = 15,604,279,627,944,186/132,912,147.60
  6. Step 6: Final answer
    x = 117,402,960.60

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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.