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Finding the Fourth Proportional to 111,644.48, 154,041.60 and 66,303.44

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Solution

The fourth proportional to 111,644.48, 154,041.60 and 66,303.44 is: 91,482.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,644.48 : 154,041.60 = 66,303.44 : x
  2. Step 2: Convert to fraction form
    111,644.48/154,041.60 = 66,303.44/x
  3. Step 3: Cross multiply
    111,644.48x = 154,041.60 × 66,303.44
  4. Step 4: Simplify right side
    111,644.48x = 10,213,487,983.10
  5. Step 5: Solve for x
    x = 10,213,487,983.10/111,644.48
  6. Step 6: Final answer
    x = 91,482.25

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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.