Home / 136,934.88-189,211.58-105,376.47

Finding the Fourth Proportional to 136,934.88, 189,211.58 and 105,376.47

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Solution

The fourth proportional to 136,934.88, 189,211.58 and 105,376.47 is: 145,605.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,934.88 : 189,211.58 = 105,376.47 : x
  2. Step 2: Convert to fraction form
    136,934.88/189,211.58 = 105,376.47/x
  3. Step 3: Cross multiply
    136,934.88x = 189,211.58 × 105,376.47
  4. Step 4: Simplify right side
    136,934.88x = 19,938,448,383.52
  5. Step 5: Solve for x
    x = 19,938,448,383.52/136,934.88
  6. Step 6: Final answer
    x = 145,605.33

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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.