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Finding the Fourth Proportional to 111,718.57, 154,328.28 and 101,629.21

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Solution

The fourth proportional to 111,718.57, 154,328.28 and 101,629.21 is: 140,390.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,718.57 : 154,328.28 = 101,629.21 : x
  2. Step 2: Convert to fraction form
    111,718.57/154,328.28 = 101,629.21/x
  3. Step 3: Cross multiply
    111,718.57x = 154,328.28 × 101,629.21
  4. Step 4: Simplify right side
    111,718.57x = 15,684,261,177.06
  5. Step 5: Solve for x
    x = 15,684,261,177.06/111,718.57
  6. Step 6: Final answer
    x = 140,390.82

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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.