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Finding the Fourth Proportional to 137,674.74, 189,975.60 and 77,232.84

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Solution

The fourth proportional to 137,674.74, 189,975.60 and 77,232.84 is: 106,572.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,674.74 : 189,975.60 = 77,232.84 : x
  2. Step 2: Convert to fraction form
    137,674.74/189,975.60 = 77,232.84/x
  3. Step 3: Cross multiply
    137,674.74x = 189,975.60 × 77,232.84
  4. Step 4: Simplify right side
    137,674.74x = 14,672,355,118.70
  5. Step 5: Solve for x
    x = 14,672,355,118.70/137,674.74
  6. Step 6: Final answer
    x = 106,572.60

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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.