Home / 103,778.78-143,225.50-63,519.34

Finding the Fourth Proportional to 103,778.78, 143,225.50 and 63,519.34

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Solution

The fourth proportional to 103,778.78, 143,225.50 and 63,519.34 is: 87,663.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,778.78 : 143,225.50 = 63,519.34 : x
  2. Step 2: Convert to fraction form
    103,778.78/143,225.50 = 63,519.34/x
  3. Step 3: Cross multiply
    103,778.78x = 143,225.50 × 63,519.34
  4. Step 4: Simplify right side
    103,778.78x = 9,097,589,231.17
  5. Step 5: Solve for x
    x = 9,097,589,231.17/103,778.78
  6. Step 6: Final answer
    x = 87,663.29

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1.5x scale

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.