Home / 140,249,724.24-193,540,906.80-78,370,571.28

Finding the Fourth Proportional to 140,249,724.24, 193,540,906.80 and 78,370,571.28

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Solution

The fourth proportional to 140,249,724.24, 193,540,906.80 and 78,370,571.28 is: 108,149,313.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,249,724.24 : 193,540,906.80 = 78,370,571.28 : x
  2. Step 2: Convert to fraction form
    140,249,724.24/193,540,906.80 = 78,370,571.28/x
  3. Step 3: Cross multiply
    140,249,724.24x = 193,540,906.80 × 78,370,571.28
  4. Step 4: Simplify right side
    140,249,724.24x = 15,167,911,431,965,238
  5. Step 5: Solve for x
    x = 15,167,911,431,965,238/140,249,724.24
  6. Step 6: Final answer
    x = 108,149,313.76

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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.