Home / 103,867.08-143,289.64-63,564.72

Finding the Fourth Proportional to 103,867.08, 143,289.64 and 63,564.72

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Solution

The fourth proportional to 103,867.08, 143,289.64 and 63,564.72 is: 87,690.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,867.08 : 143,289.64 = 63,564.72 : x
  2. Step 2: Convert to fraction form
    103,867.08/143,289.64 = 63,564.72/x
  3. Step 3: Cross multiply
    103,867.08x = 143,289.64 × 63,564.72
  4. Step 4: Simplify right side
    103,867.08x = 9,108,165,845.50
  5. Step 5: Solve for x
    x = 9,108,165,845.50/103,867.08
  6. Step 6: Final answer
    x = 87,690.59

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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.