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Finding the Fourth Proportional to 111,908.24, 154,424.23 and 61,607.24

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Solution

The fourth proportional to 111,908.24, 154,424.23 and 61,607.24 is: 85,012.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,908.24 : 154,424.23 = 61,607.24 : x
  2. Step 2: Convert to fraction form
    111,908.24/154,424.23 = 61,607.24/x
  3. Step 3: Cross multiply
    111,908.24x = 154,424.23 × 61,607.24
  4. Step 4: Simplify right side
    111,908.24x = 9,513,649,673.29
  5. Step 5: Solve for x
    x = 9,513,649,673.29/111,908.24
  6. Step 6: Final answer
    x = 85,012.95

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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.