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Finding the Fourth Proportional to 133,529.80, 199,970.70 and 71,062.60

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Solution

The fourth proportional to 133,529.80, 199,970.70 and 71,062.60 is: 106,421.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,529.80 : 199,970.70 = 71,062.60 : x
  2. Step 2: Convert to fraction form
    133,529.80/199,970.70 = 71,062.60/x
  3. Step 3: Cross multiply
    133,529.80x = 199,970.70 × 71,062.60
  4. Step 4: Simplify right side
    133,529.80x = 14,210,437,865.82
  5. Step 5: Solve for x
    x = 14,210,437,865.82/133,529.80
  6. Step 6: Final answer
    x = 106,421.47

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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.