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Finding the Fourth Proportional to 111,998.40, 169,034.64 and 111,998.40

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Solution

The fourth proportional to 111,998.40, 169,034.64 and 111,998.40 is: 169,034.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,998.40 : 169,034.64 = 111,998.40 : x
  2. Step 2: Convert to fraction form
    111,998.40/169,034.64 = 111,998.40/x
  3. Step 3: Cross multiply
    111,998.40x = 169,034.64 × 111,998.40
  4. Step 4: Simplify right side
    111,998.40x = 18,931,609,224.58
  5. Step 5: Solve for x
    x = 18,931,609,224.58/111,998.40
  6. Step 6: Final answer
    x = 169,034.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.