Home / 138,749.46-191,474.60-75,087.72

Finding the Fourth Proportional to 138,749.46, 191,474.60 and 75,087.72

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Solution

The fourth proportional to 138,749.46, 191,474.60 and 75,087.72 is: 103,621.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,749.46 : 191,474.60 = 75,087.72 : x
  2. Step 2: Convert to fraction form
    138,749.46/191,474.60 = 75,087.72/x
  3. Step 3: Cross multiply
    138,749.46x = 191,474.60 × 75,087.72
  4. Step 4: Simplify right side
    138,749.46x = 14,377,390,776.47
  5. Step 5: Solve for x
    x = 14,377,390,776.47/138,749.46
  6. Step 6: Final answer
    x = 103,621.24

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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.