Home / 103,823.73-143,278.08-61,381.89

Finding the Fourth Proportional to 103,823.73, 143,278.08 and 61,381.89

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Solution

The fourth proportional to 103,823.73, 143,278.08 and 61,381.89 is: 84,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,823.73 : 143,278.08 = 61,381.89 : x
  2. Step 2: Convert to fraction form
    103,823.73/143,278.08 = 61,381.89/x
  3. Step 3: Cross multiply
    103,823.73x = 143,278.08 × 61,381.89
  4. Step 4: Simplify right side
    103,823.73x = 8,794,679,345.97
  5. Step 5: Solve for x
    x = 8,794,679,345.97/103,823.73
  6. Step 6: Final answer
    x = 84,707.80

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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.