Home / 111,765.24-154,110.06-81,497.16

Finding the Fourth Proportional to 111,765.24, 154,110.06 and 81,497.16

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Solution

The fourth proportional to 111,765.24, 154,110.06 and 81,497.16 is: 112,374.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,765.24 : 154,110.06 = 81,497.16 : x
  2. Step 2: Convert to fraction form
    111,765.24/154,110.06 = 81,497.16/x
  3. Step 3: Cross multiply
    111,765.24x = 154,110.06 × 81,497.16
  4. Step 4: Simplify right side
    111,765.24x = 12,559,532,217.43
  5. Step 5: Solve for x
    x = 12,559,532,217.43/111,765.24
  6. Step 6: Final answer
    x = 112,374.22

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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.