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Finding the Fourth Proportional to 133,036.60, 199,611.60 and 69,905.20

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Solution

The fourth proportional to 133,036.60, 199,611.60 and 69,905.20 is: 104,887.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,036.60 : 199,611.60 = 69,905.20 : x
  2. Step 2: Convert to fraction form
    133,036.60/199,611.60 = 69,905.20/x
  3. Step 3: Cross multiply
    133,036.60x = 199,611.60 × 69,905.20
  4. Step 4: Simplify right side
    133,036.60x = 13,953,888,820.32
  5. Step 5: Solve for x
    x = 13,953,888,820.32/133,036.60
  6. Step 6: Final answer
    x = 104,887.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.