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Finding the Fourth Proportional to 109,814.46, 151,485.44 and 66,807.06

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Solution

The fourth proportional to 109,814.46, 151,485.44 and 66,807.06 is: 92,158.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,814.46 : 151,485.44 = 66,807.06 : x
  2. Step 2: Convert to fraction form
    109,814.46/151,485.44 = 66,807.06/x
  3. Step 3: Cross multiply
    109,814.46x = 151,485.44 × 66,807.06
  4. Step 4: Simplify right side
    109,814.46x = 10,120,296,879.21
  5. Step 5: Solve for x
    x = 10,120,296,879.21/109,814.46
  6. Step 6: Final answer
    x = 92,158.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.