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Finding the Fourth Proportional to 111,485.64, 167,275.30 and 69,400.92

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Solution

The fourth proportional to 111,485.64, 167,275.30 and 69,400.92 is: 104,130.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,485.64 : 167,275.30 = 69,400.92 : x
  2. Step 2: Convert to fraction form
    111,485.64/167,275.30 = 69,400.92/x
  3. Step 3: Cross multiply
    111,485.64x = 167,275.30 × 69,400.92
  4. Step 4: Simplify right side
    111,485.64x = 11,609,059,713.28
  5. Step 5: Solve for x
    x = 11,609,059,713.28/111,485.64
  6. Step 6: Final answer
    x = 104,130.54

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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.