Home / 138,749.60-191,473.74-75,086.84

Finding the Fourth Proportional to 138,749.60, 191,473.74 and 75,086.84

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Solution

The fourth proportional to 138,749.60, 191,473.74 and 75,086.84 is: 103,619.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,749.60 : 191,473.74 = 75,086.84 : x
  2. Step 2: Convert to fraction form
    138,749.60/191,473.74 = 75,086.84/x
  3. Step 3: Cross multiply
    138,749.60x = 191,473.74 × 75,086.84
  4. Step 4: Simplify right side
    138,749.60x = 14,377,158,079.58
  5. Step 5: Solve for x
    x = 14,377,158,079.58/138,749.60
  6. Step 6: Final answer
    x = 103,619.46

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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.