Home / 128,315.54-192,339.77-48,298.58

Finding the Fourth Proportional to 128,315.54, 192,339.77 and 48,298.58

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Solution

The fourth proportional to 128,315.54, 192,339.77 and 48,298.58 is: 72,397.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,315.54 : 192,339.77 = 48,298.58 : x
  2. Step 2: Convert to fraction form
    128,315.54/192,339.77 = 48,298.58/x
  3. Step 3: Cross multiply
    128,315.54x = 192,339.77 × 48,298.58
  4. Step 4: Simplify right side
    128,315.54x = 9,289,737,286.61
  5. Step 5: Solve for x
    x = 9,289,737,286.61/128,315.54
  6. Step 6: Final answer
    x = 72,397.60

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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.