Home / 128,336.18-192,531.74-38,385.95

Finding the Fourth Proportional to 128,336.18, 192,531.74 and 38,385.95

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Solution

The fourth proportional to 128,336.18, 192,531.74 and 38,385.95 is: 57,587.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,336.18 : 192,531.74 = 38,385.95 : x
  2. Step 2: Convert to fraction form
    128,336.18/192,531.74 = 38,385.95/x
  3. Step 3: Cross multiply
    128,336.18x = 192,531.74 × 38,385.95
  4. Step 4: Simplify right side
    128,336.18x = 7,390,512,590.46
  5. Step 5: Solve for x
    x = 7,390,512,590.46/128,336.18
  6. Step 6: Final answer
    x = 57,587.13

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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.