Home / 236,308.89-326,102.75-128,878.70

Finding the Fourth Proportional to 236,308.89, 326,102.75 and 128,878.70

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Solution

The fourth proportional to 236,308.89, 326,102.75 and 128,878.70 is: 177,850.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,308.89 : 326,102.75 = 128,878.70 : x
  2. Step 2: Convert to fraction form
    236,308.89/326,102.75 = 128,878.70/x
  3. Step 3: Cross multiply
    236,308.89x = 326,102.75 × 128,878.70
  4. Step 4: Simplify right side
    236,308.89x = 42,027,696,211.52
  5. Step 5: Solve for x
    x = 42,027,696,211.52/236,308.89
  6. Step 6: Final answer
    x = 177,850.68

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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.