Home / 138,682,641.51-191,382,148.47-75,103,474.20

Finding the Fourth Proportional to 138,682,641.51, 191,382,148.47 and 75,103,474.20

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Solution

The fourth proportional to 138,682,641.51, 191,382,148.47 and 75,103,474.20 is: 103,642,850.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,682,641.51 : 191,382,148.47 = 75,103,474.20 : x
  2. Step 2: Convert to fraction form
    138,682,641.51/191,382,148.47 = 75,103,474.20/x
  3. Step 3: Cross multiply
    138,682,641.51x = 191,382,148.47 × 75,103,474.20
  4. Step 4: Simplify right side
    138,682,641.51x = 14,373,464,250,234,418
  5. Step 5: Solve for x
    x = 14,373,464,250,234,418/138,682,641.51
  6. Step 6: Final answer
    x = 103,642,850.28

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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.