Home / 111,785.61-154,327.91-74,110.89

Finding the Fourth Proportional to 111,785.61, 154,327.91 and 74,110.89

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Solution

The fourth proportional to 111,785.61, 154,327.91 and 74,110.89 is: 102,315.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,785.61 : 154,327.91 = 74,110.89 : x
  2. Step 2: Convert to fraction form
    111,785.61/154,327.91 = 74,110.89/x
  3. Step 3: Cross multiply
    111,785.61x = 154,327.91 × 74,110.89
  4. Step 4: Simplify right side
    111,785.61x = 11,437,378,391.39
  5. Step 5: Solve for x
    x = 11,437,378,391.39/111,785.61
  6. Step 6: Final answer
    x = 102,315.30

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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.