Home / 128,412.10-192,848.55-93,391.30

Finding the Fourth Proportional to 128,412.10, 192,848.55 and 93,391.30

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Solution

The fourth proportional to 128,412.10, 192,848.55 and 93,391.30 is: 140,254.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,412.10 : 192,848.55 = 93,391.30 : x
  2. Step 2: Convert to fraction form
    128,412.10/192,848.55 = 93,391.30/x
  3. Step 3: Cross multiply
    128,412.10x = 192,848.55 × 93,391.30
  4. Step 4: Simplify right side
    128,412.10x = 18,010,376,787.62
  5. Step 5: Solve for x
    x = 18,010,376,787.62/128,412.10
  6. Step 6: Final answer
    x = 140,254.51

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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.