Home / 111,171.36-153,675.04-99,190.59

Finding the Fourth Proportional to 111,171.36, 153,675.04 and 99,190.59

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Solution

The fourth proportional to 111,171.36, 153,675.04 and 99,190.59 is: 137,113.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,171.36 : 153,675.04 = 99,190.59 : x
  2. Step 2: Convert to fraction form
    111,171.36/153,675.04 = 99,190.59/x
  3. Step 3: Cross multiply
    111,171.36x = 153,675.04 × 99,190.59
  4. Step 4: Simplify right side
    111,171.36x = 15,243,117,463.70
  5. Step 5: Solve for x
    x = 15,243,117,463.70/111,171.36
  6. Step 6: Final answer
    x = 137,113.71

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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.