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Finding the Fourth Proportional to 111,479.55, 153,969.54 and 73,409.29

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Solution

The fourth proportional to 111,479.55, 153,969.54 and 73,409.29 is: 101,388.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,479.55 : 153,969.54 = 73,409.29 : x
  2. Step 2: Convert to fraction form
    111,479.55/153,969.54 = 73,409.29/x
  3. Step 3: Cross multiply
    111,479.55x = 153,969.54 × 73,409.29
  4. Step 4: Simplify right side
    111,479.55x = 11,302,794,613.03
  5. Step 5: Solve for x
    x = 11,302,794,613.03/111,479.55
  6. Step 6: Final answer
    x = 101,388.95

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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.