Home / 154,188.36-212,845.51-93,778.40

Finding the Fourth Proportional to 154,188.36, 212,845.51 and 93,778.40

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Solution

The fourth proportional to 154,188.36, 212,845.51 and 93,778.40 is: 129,454.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,188.36 : 212,845.51 = 93,778.40 : x
  2. Step 2: Convert to fraction form
    154,188.36/212,845.51 = 93,778.40/x
  3. Step 3: Cross multiply
    154,188.36x = 212,845.51 × 93,778.40
  4. Step 4: Simplify right side
    154,188.36x = 19,960,310,906.09
  5. Step 5: Solve for x
    x = 19,960,310,906.09/154,188.36
  6. Step 6: Final answer
    x = 129,454.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.