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Finding the Fourth Proportional to 106,365.80, 159,548.70 and 71,114.60

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Solution

The fourth proportional to 106,365.80, 159,548.70 and 71,114.60 is: 106,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,365.80 : 159,548.70 = 71,114.60 : x
  2. Step 2: Convert to fraction form
    106,365.80/159,548.70 = 71,114.60/x
  3. Step 3: Cross multiply
    106,365.80x = 159,548.70 × 71,114.60
  4. Step 4: Simplify right side
    106,365.80x = 11,346,241,981.02
  5. Step 5: Solve for x
    x = 11,346,241,981.02/106,365.80
  6. Step 6: Final answer
    x = 106,671.90

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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.