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Finding the Fourth Proportional to 136,374.84, 188,255.52 and 91,688.76

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Solution

The fourth proportional to 136,374.84, 188,255.52 and 91,688.76 is: 126,569.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,374.84 : 188,255.52 = 91,688.76 : x
  2. Step 2: Convert to fraction form
    136,374.84/188,255.52 = 91,688.76/x
  3. Step 3: Cross multiply
    136,374.84x = 188,255.52 × 91,688.76
  4. Step 4: Simplify right side
    136,374.84x = 17,260,915,191.96
  5. Step 5: Solve for x
    x = 17,260,915,191.96/136,374.84
  6. Step 6: Final answer
    x = 126,569.65

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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.