Home / 138,725.45-191,440.63-75,062.96

Finding the Fourth Proportional to 138,725.45, 191,440.63 and 75,062.96

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Solution

The fourth proportional to 138,725.45, 191,440.63 and 75,062.96 is: 103,586.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,725.45 : 191,440.63 = 75,062.96 : x
  2. Step 2: Convert to fraction form
    138,725.45/191,440.63 = 75,062.96/x
  3. Step 3: Cross multiply
    138,725.45x = 191,440.63 × 75,062.96
  4. Step 4: Simplify right side
    138,725.45x = 14,370,100,352.06
  5. Step 5: Solve for x
    x = 14,370,100,352.06/138,725.45
  6. Step 6: Final answer
    x = 103,586.62

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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.