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Finding the Fourth Proportional to 130,440.60, 180,009 and 73,850.76

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Solution

The fourth proportional to 130,440.60, 180,009 and 73,850.76 is: 101,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,440.60 : 180,009 = 73,850.76 : x
  2. Step 2: Convert to fraction form
    130,440.60/180,009 = 73,850.76/x
  3. Step 3: Cross multiply
    130,440.60x = 180,009 × 73,850.76
  4. Step 4: Simplify right side
    130,440.60x = 13,293,801,456.84
  5. Step 5: Solve for x
    x = 13,293,801,456.84/130,440.60
  6. Step 6: Final answer
    x = 101,914.60

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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.