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Finding the Fourth Proportional to 111,455.70, 167,446 and 90,810.42

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Solution

The fourth proportional to 111,455.70, 167,446 and 90,810.42 is: 136,429.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,455.70 : 167,446 = 90,810.42 : x
  2. Step 2: Convert to fraction form
    111,455.70/167,446 = 90,810.42/x
  3. Step 3: Cross multiply
    111,455.70x = 167,446 × 90,810.42
  4. Step 4: Simplify right side
    111,455.70x = 15,205,841,587.32
  5. Step 5: Solve for x
    x = 15,205,841,587.32/111,455.70
  6. Step 6: Final answer
    x = 136,429.47

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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.