Home / 128,434.80-192,522.60-58,364.40

Finding the Fourth Proportional to 128,434.80, 192,522.60 and 58,364.40

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Solution

The fourth proportional to 128,434.80, 192,522.60 and 58,364.40 is: 87,487.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,434.80 : 192,522.60 = 58,364.40 : x
  2. Step 2: Convert to fraction form
    128,434.80/192,522.60 = 58,364.40/x
  3. Step 3: Cross multiply
    128,434.80x = 192,522.60 × 58,364.40
  4. Step 4: Simplify right side
    128,434.80x = 11,236,466,035.44
  5. Step 5: Solve for x
    x = 11,236,466,035.44/128,434.80
  6. Step 6: Final answer
    x = 87,487.71

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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.