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Finding the Fourth Proportional to 181,647.40, 272,276.70 and 81,790.60

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Solution

The fourth proportional to 181,647.40, 272,276.70 and 81,790.60 is: 122,598.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,647.40 : 272,276.70 = 81,790.60 : x
  2. Step 2: Convert to fraction form
    181,647.40/272,276.70 = 81,790.60/x
  3. Step 3: Cross multiply
    181,647.40x = 272,276.70 × 81,790.60
  4. Step 4: Simplify right side
    181,647.40x = 22,269,674,659.02
  5. Step 5: Solve for x
    x = 22,269,674,659.02/181,647.40
  6. Step 6: Final answer
    x = 122,598.37

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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.