Home / 156,003.70-234,005.55-128,010.10

Finding the Fourth Proportional to 156,003.70, 234,005.55 and 128,010.10

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Solution

The fourth proportional to 156,003.70, 234,005.55 and 128,010.10 is: 192,015.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,003.70 : 234,005.55 = 128,010.10 : x
  2. Step 2: Convert to fraction form
    156,003.70/234,005.55 = 128,010.10/x
  3. Step 3: Cross multiply
    156,003.70x = 234,005.55 × 128,010.10
  4. Step 4: Simplify right side
    156,003.70x = 29,955,073,856.06
  5. Step 5: Solve for x
    x = 29,955,073,856.06/156,003.70
  6. Step 6: Final answer
    x = 192,015.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.