Home / 138,846.72-191,608.20-75,184.32

Finding the Fourth Proportional to 138,846.72, 191,608.20 and 75,184.32

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Solution

The fourth proportional to 138,846.72, 191,608.20 and 75,184.32 is: 103,754.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,846.72 : 191,608.20 = 75,184.32 : x
  2. Step 2: Convert to fraction form
    138,846.72/191,608.20 = 75,184.32/x
  3. Step 3: Cross multiply
    138,846.72x = 191,608.20 × 75,184.32
  4. Step 4: Simplify right side
    138,846.72x = 14,405,932,223.42
  5. Step 5: Solve for x
    x = 14,405,932,223.42/138,846.72
  6. Step 6: Final answer
    x = 103,754.21

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1.5x scale

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.