Home / 236,408.96-326,237.28-128,981.12

Finding the Fourth Proportional to 236,408.96, 326,237.28 and 128,981.12

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Solution

The fourth proportional to 236,408.96, 326,237.28 and 128,981.12 is: 177,990.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,408.96 : 326,237.28 = 128,981.12 : x
  2. Step 2: Convert to fraction form
    236,408.96/326,237.28 = 128,981.12/x
  3. Step 3: Cross multiply
    236,408.96x = 326,237.28 × 128,981.12
  4. Step 4: Simplify right side
    236,408.96x = 42,078,449,760.15
  5. Step 5: Solve for x
    x = 42,078,449,760.15/236,408.96
  6. Step 6: Final answer
    x = 177,990.08

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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.