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Finding the Fourth Proportional to 111,503.31, 153,662.08 and 109,453.74

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Solution

The fourth proportional to 111,503.31, 153,662.08 and 109,453.74 is: 150,837.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,503.31 : 153,662.08 = 109,453.74 : x
  2. Step 2: Convert to fraction form
    111,503.31/153,662.08 = 109,453.74/x
  3. Step 3: Cross multiply
    111,503.31x = 153,662.08 × 109,453.74
  4. Step 4: Simplify right side
    111,503.31x = 16,818,889,352.18
  5. Step 5: Solve for x
    x = 16,818,889,352.18/111,503.31
  6. Step 6: Final answer
    x = 150,837.58

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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.