Home / 133,420.39-184,118.62-72,990.34

Finding the Fourth Proportional to 133,420.39, 184,118.62 and 72,990.34

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Solution

The fourth proportional to 133,420.39, 184,118.62 and 72,990.34 is: 100,725.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,420.39 : 184,118.62 = 72,990.34 : x
  2. Step 2: Convert to fraction form
    133,420.39/184,118.62 = 72,990.34/x
  3. Step 3: Cross multiply
    133,420.39x = 184,118.62 × 72,990.34
  4. Step 4: Simplify right side
    133,420.39x = 13,438,880,674.13
  5. Step 5: Solve for x
    x = 13,438,880,674.13/133,420.39
  6. Step 6: Final answer
    x = 100,725.84

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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.