Home / 103,981.30-143,493.86-56,234.64

Finding the Fourth Proportional to 103,981.30, 143,493.86 and 56,234.64

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Solution

The fourth proportional to 103,981.30, 143,493.86 and 56,234.64 is: 77,603.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,981.30 : 143,493.86 = 56,234.64 : x
  2. Step 2: Convert to fraction form
    103,981.30/143,493.86 = 56,234.64/x
  3. Step 3: Cross multiply
    103,981.30x = 143,493.86 × 56,234.64
  4. Step 4: Simplify right side
    103,981.30x = 8,069,325,559.31
  5. Step 5: Solve for x
    x = 8,069,325,559.31/103,981.30
  6. Step 6: Final answer
    x = 77,603.62

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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.