Home / 103,971.72-143,480.45-56,224.95

Finding the Fourth Proportional to 103,971.72, 143,480.45 and 56,224.95

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Solution

The fourth proportional to 103,971.72, 143,480.45 and 56,224.95 is: 77,590.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,971.72 : 143,480.45 = 56,224.95 : x
  2. Step 2: Convert to fraction form
    103,971.72/143,480.45 = 56,224.95/x
  3. Step 3: Cross multiply
    103,971.72x = 143,480.45 × 56,224.95
  4. Step 4: Simplify right side
    103,971.72x = 8,067,180,846.10
  5. Step 5: Solve for x
    x = 8,067,180,846.10/103,971.72
  6. Step 6: Final answer
    x = 77,590.15

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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.