Home / 103,860.18-143,337.06-66,132

Finding the Fourth Proportional to 103,860.18, 143,337.06 and 66,132

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Solution

The fourth proportional to 103,860.18, 143,337.06 and 66,132 is: 91,268.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,860.18 : 143,337.06 = 66,132 : x
  2. Step 2: Convert to fraction form
    103,860.18/143,337.06 = 66,132/x
  3. Step 3: Cross multiply
    103,860.18x = 143,337.06 × 66,132
  4. Step 4: Simplify right side
    103,860.18x = 9,479,166,451.92
  5. Step 5: Solve for x
    x = 9,479,166,451.92/103,860.18
  6. Step 6: Final answer
    x = 91,268.53

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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.