Home / 128,408.42-192,612.08-34,913.90

Finding the Fourth Proportional to 128,408.42, 192,612.08 and 34,913.90

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Solution

The fourth proportional to 128,408.42, 192,612.08 and 34,913.90 is: 52,370.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,408.42 : 192,612.08 = 34,913.90 : x
  2. Step 2: Convert to fraction form
    128,408.42/192,612.08 = 34,913.90/x
  3. Step 3: Cross multiply
    128,408.42x = 192,612.08 × 34,913.90
  4. Step 4: Simplify right side
    128,408.42x = 6,724,838,899.91
  5. Step 5: Solve for x
    x = 6,724,838,899.91/128,408.42
  6. Step 6: Final answer
    x = 52,370.70

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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.