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Finding the Fourth Proportional to 111,322.80, 167,026.50 and 66,980.16

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Solution

The fourth proportional to 111,322.80, 167,026.50 and 66,980.16 is: 100,495.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,322.80 : 167,026.50 = 66,980.16 : x
  2. Step 2: Convert to fraction form
    111,322.80/167,026.50 = 66,980.16/x
  3. Step 3: Cross multiply
    111,322.80x = 167,026.50 × 66,980.16
  4. Step 4: Simplify right side
    111,322.80x = 11,187,461,694.24
  5. Step 5: Solve for x
    x = 11,187,461,694.24/111,322.80
  6. Step 6: Final answer
    x = 100,495.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.