Home / 103,631.21-143,000.86-58,308.06

Finding the Fourth Proportional to 103,631.21, 143,000.86 and 58,308.06

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Solution

The fourth proportional to 103,631.21, 143,000.86 and 58,308.06 is: 80,459.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,631.21 : 143,000.86 = 58,308.06 : x
  2. Step 2: Convert to fraction form
    103,631.21/143,000.86 = 58,308.06/x
  3. Step 3: Cross multiply
    103,631.21x = 143,000.86 × 58,308.06
  4. Step 4: Simplify right side
    103,631.21x = 8,338,102,724.93
  5. Step 5: Solve for x
    x = 8,338,102,724.93/103,631.21
  6. Step 6: Final answer
    x = 80,459.38

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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.