Home / 236,391.72-326,228.79-128,967.66

Finding the Fourth Proportional to 236,391.72, 326,228.79 and 128,967.66

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Solution

The fourth proportional to 236,391.72, 326,228.79 and 128,967.66 is: 177,979.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,391.72 : 326,228.79 = 128,967.66 : x
  2. Step 2: Convert to fraction form
    236,391.72/326,228.79 = 128,967.66/x
  3. Step 3: Cross multiply
    236,391.72x = 326,228.79 × 128,967.66
  4. Step 4: Simplify right side
    236,391.72x = 42,072,963,670.93
  5. Step 5: Solve for x
    x = 42,072,963,670.93/236,391.72
  6. Step 6: Final answer
    x = 177,979.85

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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.