Home / 145,815.88-218,716.54-57,085.65

Finding the Fourth Proportional to 145,815.88, 218,716.54 and 57,085.65

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Solution

The fourth proportional to 145,815.88, 218,716.54 and 57,085.65 is: 85,625.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,815.88 : 218,716.54 = 57,085.65 : x
  2. Step 2: Convert to fraction form
    145,815.88/218,716.54 = 57,085.65/x
  3. Step 3: Cross multiply
    145,815.88x = 218,716.54 × 57,085.65
  4. Step 4: Simplify right side
    145,815.88x = 12,485,575,851.65
  5. Step 5: Solve for x
    x = 12,485,575,851.65/145,815.88
  6. Step 6: Final answer
    x = 85,625.62

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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.