Home / 103,709.89-143,108.69-58,387.04

Finding the Fourth Proportional to 103,709.89, 143,108.69 and 58,387.04

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Solution

The fourth proportional to 103,709.89, 143,108.69 and 58,387.04 is: 80,567.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,709.89 : 143,108.69 = 58,387.04 : x
  2. Step 2: Convert to fraction form
    103,709.89/143,108.69 = 58,387.04/x
  3. Step 3: Cross multiply
    103,709.89x = 143,108.69 × 58,387.04
  4. Step 4: Simplify right side
    103,709.89x = 8,355,692,873.21
  5. Step 5: Solve for x
    x = 8,355,692,873.21/103,709.89
  6. Step 6: Final answer
    x = 80,567.95

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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.