Home / 139,959,725.80-193,144,503.78-78,080,064.28

Finding the Fourth Proportional to 139,959,725.80, 193,144,503.78 and 78,080,064.28

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Solution

The fourth proportional to 139,959,725.80, 193,144,503.78 and 78,080,064.28 is: 107,750,534.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,959,725.80 : 193,144,503.78 = 78,080,064.28 : x
  2. Step 2: Convert to fraction form
    139,959,725.80/193,144,503.78 = 78,080,064.28/x
  3. Step 3: Cross multiply
    139,959,725.80x = 193,144,503.78 × 78,080,064.28
  4. Step 4: Simplify right side
    139,959,725.80x = 15,080,735,270,471,104
  5. Step 5: Solve for x
    x = 15,080,735,270,471,104/139,959,725.80
  6. Step 6: Final answer
    x = 107,750,534.55

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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.