Home / 103,619.08-142,993.78-58,907.40

Finding the Fourth Proportional to 103,619.08, 142,993.78 and 58,907.40

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Solution

The fourth proportional to 103,619.08, 142,993.78 and 58,907.40 is: 81,291.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,619.08 : 142,993.78 = 58,907.40 : x
  2. Step 2: Convert to fraction form
    103,619.08/142,993.78 = 58,907.40/x
  3. Step 3: Cross multiply
    103,619.08x = 142,993.78 × 58,907.40
  4. Step 4: Simplify right side
    103,619.08x = 8,423,391,795.97
  5. Step 5: Solve for x
    x = 8,423,391,795.97/103,619.08
  6. Step 6: Final answer
    x = 81,291.90

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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.