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Finding the Fourth Proportional to 125,499.51, 187,999.29 and 91,836.45

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Solution

The fourth proportional to 125,499.51, 187,999.29 and 91,836.45 is: 137,571.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,499.51 : 187,999.29 = 91,836.45 : x
  2. Step 2: Convert to fraction form
    125,499.51/187,999.29 = 91,836.45/x
  3. Step 3: Cross multiply
    125,499.51x = 187,999.29 × 91,836.45
  4. Step 4: Simplify right side
    125,499.51x = 17,265,187,396.12
  5. Step 5: Solve for x
    x = 17,265,187,396.12/125,499.51
  6. Step 6: Final answer
    x = 137,571.75

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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.