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Finding the Fourth Proportional to 120,969.40, 181,259.70 and 101,140.60

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Solution

The fourth proportional to 120,969.40, 181,259.70 and 101,140.60 is: 151,548.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,969.40 : 181,259.70 = 101,140.60 : x
  2. Step 2: Convert to fraction form
    120,969.40/181,259.70 = 101,140.60/x
  3. Step 3: Cross multiply
    120,969.40x = 181,259.70 × 101,140.60
  4. Step 4: Simplify right side
    120,969.40x = 18,332,714,813.82
  5. Step 5: Solve for x
    x = 18,332,714,813.82/120,969.40
  6. Step 6: Final answer
    x = 151,548.37

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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.