Home / 128,150.40-192,259.20-49,267.20

Finding the Fourth Proportional to 128,150.40, 192,259.20 and 49,267.20

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Solution

The fourth proportional to 128,150.40, 192,259.20 and 49,267.20 is: 73,913.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,150.40 : 192,259.20 = 49,267.20 : x
  2. Step 2: Convert to fraction form
    128,150.40/192,259.20 = 49,267.20/x
  3. Step 3: Cross multiply
    128,150.40x = 192,259.20 × 49,267.20
  4. Step 4: Simplify right side
    128,150.40x = 9,472,072,458.24
  5. Step 5: Solve for x
    x = 9,472,072,458.24/128,150.40
  6. Step 6: Final answer
    x = 73,913.72

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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.