Home / 103,890.17-143,336.48-63,561.89

Finding the Fourth Proportional to 103,890.17, 143,336.48 and 63,561.89

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Solution

The fourth proportional to 103,890.17, 143,336.48 and 63,561.89 is: 87,695.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,890.17 : 143,336.48 = 63,561.89 : x
  2. Step 2: Convert to fraction form
    103,890.17/143,336.48 = 63,561.89/x
  3. Step 3: Cross multiply
    103,890.17x = 143,336.48 × 63,561.89
  4. Step 4: Simplify right side
    103,890.17x = 9,110,736,540.26
  5. Step 5: Solve for x
    x = 9,110,736,540.26/103,890.17
  6. Step 6: Final answer
    x = 87,695.85

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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.