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Finding the Fourth Proportional to 136,655.58, 188,585 and 76,224.67

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Solution

The fourth proportional to 136,655.58, 188,585 and 76,224.67 is: 105,190.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,655.58 : 188,585 = 76,224.67 : x
  2. Step 2: Convert to fraction form
    136,655.58/188,585 = 76,224.67/x
  3. Step 3: Cross multiply
    136,655.58x = 188,585 × 76,224.67
  4. Step 4: Simplify right side
    136,655.58x = 14,374,829,391.95
  5. Step 5: Solve for x
    x = 14,374,829,391.95/136,655.58
  6. Step 6: Final answer
    x = 105,190.21

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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.