Home / 103,768.86-143,199.06-63,479.64

Finding the Fourth Proportional to 103,768.86, 143,199.06 and 63,479.64

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Solution

The fourth proportional to 103,768.86, 143,199.06 and 63,479.64 is: 87,600.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,768.86 : 143,199.06 = 63,479.64 : x
  2. Step 2: Convert to fraction form
    103,768.86/143,199.06 = 63,479.64/x
  3. Step 3: Cross multiply
    103,768.86x = 143,199.06 × 63,479.64
  4. Step 4: Simplify right side
    103,768.86x = 9,090,224,777.14
  5. Step 5: Solve for x
    x = 9,090,224,777.14/103,768.86
  6. Step 6: Final answer
    x = 87,600.70

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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.