Home / 128,180.58-192,271.32-39,433.47

Finding the Fourth Proportional to 128,180.58, 192,271.32 and 39,433.47

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Solution

The fourth proportional to 128,180.58, 192,271.32 and 39,433.47 is: 59,150.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,180.58 : 192,271.32 = 39,433.47 : x
  2. Step 2: Convert to fraction form
    128,180.58/192,271.32 = 39,433.47/x
  3. Step 3: Cross multiply
    128,180.58x = 192,271.32 × 39,433.47
  4. Step 4: Simplify right side
    128,180.58x = 7,581,925,329.08
  5. Step 5: Solve for x
    x = 7,581,925,329.08/128,180.58
  6. Step 6: Final answer
    x = 59,150.34

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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.