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Finding the Fourth Proportional to 158,577.75, 218,856.74 and 91,509.75

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Solution

The fourth proportional to 158,577.75, 218,856.74 and 91,509.75 is: 126,294.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,577.75 : 218,856.74 = 91,509.75 : x
  2. Step 2: Convert to fraction form
    158,577.75/218,856.74 = 91,509.75/x
  3. Step 3: Cross multiply
    158,577.75x = 218,856.74 × 91,509.75
  4. Step 4: Simplify right side
    158,577.75x = 20,027,525,105.67
  5. Step 5: Solve for x
    x = 20,027,525,105.67/158,577.75
  6. Step 6: Final answer
    x = 126,294.67

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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.