Home / 105,690.60-145,849.14-57,942.90

Finding the Fourth Proportional to 105,690.60, 145,849.14 and 57,942.90

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Solution

The fourth proportional to 105,690.60, 145,849.14 and 57,942.90 is: 79,959.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,690.60 : 145,849.14 = 57,942.90 : x
  2. Step 2: Convert to fraction form
    105,690.60/145,849.14 = 57,942.90/x
  3. Step 3: Cross multiply
    105,690.60x = 145,849.14 × 57,942.90
  4. Step 4: Simplify right side
    105,690.60x = 8,450,922,134.11
  5. Step 5: Solve for x
    x = 8,450,922,134.11/105,690.60
  6. Step 6: Final answer
    x = 79,959.07

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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.