Home / 152,020.20-228,030.30-128,400.60

Finding the Fourth Proportional to 152,020.20, 228,030.30 and 128,400.60

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Solution

The fourth proportional to 152,020.20, 228,030.30 and 128,400.60 is: 192,600.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,020.20 : 228,030.30 = 128,400.60 : x
  2. Step 2: Convert to fraction form
    152,020.20/228,030.30 = 128,400.60/x
  3. Step 3: Cross multiply
    152,020.20x = 228,030.30 × 128,400.60
  4. Step 4: Simplify right side
    152,020.20x = 29,279,227,338.18
  5. Step 5: Solve for x
    x = 29,279,227,338.18/152,020.20
  6. Step 6: Final answer
    x = 192,600.90

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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.