Home / 128,411.28-192,693.09-58,289.58

Finding the Fourth Proportional to 128,411.28, 192,693.09 and 58,289.58

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Solution

The fourth proportional to 128,411.28, 192,693.09 and 58,289.58 is: 87,468.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,411.28 : 192,693.09 = 58,289.58 : x
  2. Step 2: Convert to fraction form
    128,411.28/192,693.09 = 58,289.58/x
  3. Step 3: Cross multiply
    128,411.28x = 192,693.09 × 58,289.58
  4. Step 4: Simplify right side
    128,411.28x = 11,231,999,285.00
  5. Step 5: Solve for x
    x = 11,231,999,285.00/128,411.28
  6. Step 6: Final answer
    x = 87,468.95

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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.