Home / 111,874.55-154,406.05-71,586.36

Finding the Fourth Proportional to 111,874.55, 154,406.05 and 71,586.36

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Solution

The fourth proportional to 111,874.55, 154,406.05 and 71,586.36 is: 98,801.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,874.55 : 154,406.05 = 71,586.36 : x
  2. Step 2: Convert to fraction form
    111,874.55/154,406.05 = 71,586.36/x
  3. Step 3: Cross multiply
    111,874.55x = 154,406.05 × 71,586.36
  4. Step 4: Simplify right side
    111,874.55x = 11,053,366,902.51
  5. Step 5: Solve for x
    x = 11,053,366,902.51/111,874.55
  6. Step 6: Final answer
    x = 98,801.45

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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.