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Finding the Fourth Proportional to 235,571.96, 325,085.88 and 128,142.86

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Solution

The fourth proportional to 235,571.96, 325,085.88 and 128,142.86 is: 176,835.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,571.96 : 325,085.88 = 128,142.86 : x
  2. Step 2: Convert to fraction form
    235,571.96/325,085.88 = 128,142.86/x
  3. Step 3: Cross multiply
    235,571.96x = 325,085.88 × 128,142.86
  4. Step 4: Simplify right side
    235,571.96x = 41,657,434,408.82
  5. Step 5: Solve for x
    x = 41,657,434,408.82/235,571.96
  6. Step 6: Final answer
    x = 176,835.28

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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.