Home / 128,252.80-192,379.20-125,628.40

Finding the Fourth Proportional to 128,252.80, 192,379.20 and 125,628.40

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Solution

The fourth proportional to 128,252.80, 192,379.20 and 125,628.40 is: 188,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,252.80 : 192,379.20 = 125,628.40 : x
  2. Step 2: Convert to fraction form
    128,252.80/192,379.20 = 125,628.40/x
  3. Step 3: Cross multiply
    128,252.80x = 192,379.20 × 125,628.40
  4. Step 4: Simplify right side
    128,252.80x = 24,168,291,089.28
  5. Step 5: Solve for x
    x = 24,168,291,089.28/128,252.80
  6. Step 6: Final answer
    x = 188,442.60

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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.