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Finding the Fourth Proportional to 111,309.76, 153,559.20 and 73,636.48

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Solution

The fourth proportional to 111,309.76, 153,559.20 and 73,636.48 is: 101,586.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,309.76 : 153,559.20 = 73,636.48 : x
  2. Step 2: Convert to fraction form
    111,309.76/153,559.20 = 73,636.48/x
  3. Step 3: Cross multiply
    111,309.76x = 153,559.20 × 73,636.48
  4. Step 4: Simplify right side
    111,309.76x = 11,307,558,959.62
  5. Step 5: Solve for x
    x = 11,307,558,959.62/111,309.76
  6. Step 6: Final answer
    x = 101,586.41

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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.