Home / 111,629.20-154,045.08-60,639.70

Finding the Fourth Proportional to 111,629.20, 154,045.08 and 60,639.70

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Solution

The fourth proportional to 111,629.20, 154,045.08 and 60,639.70 is: 83,681.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,629.20 : 154,045.08 = 60,639.70 : x
  2. Step 2: Convert to fraction form
    111,629.20/154,045.08 = 60,639.70/x
  3. Step 3: Cross multiply
    111,629.20x = 154,045.08 × 60,639.70
  4. Step 4: Simplify right side
    111,629.20x = 9,341,247,437.68
  5. Step 5: Solve for x
    x = 9,341,247,437.68/111,629.20
  6. Step 6: Final answer
    x = 83,681.04

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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.