Home / 136,128.60-187,856.46-75,704.76

Finding the Fourth Proportional to 136,128.60, 187,856.46 and 75,704.76

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Solution

The fourth proportional to 136,128.60, 187,856.46 and 75,704.76 is: 104,472.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,128.60 : 187,856.46 = 75,704.76 : x
  2. Step 2: Convert to fraction form
    136,128.60/187,856.46 = 75,704.76/x
  3. Step 3: Cross multiply
    136,128.60x = 187,856.46 × 75,704.76
  4. Step 4: Simplify right side
    136,128.60x = 14,221,628,218.75
  5. Step 5: Solve for x
    x = 14,221,628,218.75/136,128.60
  6. Step 6: Final answer
    x = 104,472.01

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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.