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Finding the Fourth Proportional to 111,623, 154,039.80 and 61,325.24

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Solution

The fourth proportional to 111,623, 154,039.80 and 61,325.24 is: 84,628.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,623 : 154,039.80 = 61,325.24 : x
  2. Step 2: Convert to fraction form
    111,623/154,039.80 = 61,325.24/x
  3. Step 3: Cross multiply
    111,623x = 154,039.80 × 61,325.24
  4. Step 4: Simplify right side
    111,623x = 9,446,527,704.55
  5. Step 5: Solve for x
    x = 9,446,527,704.55/111,623
  6. Step 6: Final answer
    x = 84,628.86

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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.