Home / 105,688.90-158,554.03-39,129.62

Finding the Fourth Proportional to 105,688.90, 158,554.03 and 39,129.62

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Solution

The fourth proportional to 105,688.90, 158,554.03 and 39,129.62 is: 58,702.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,688.90 : 158,554.03 = 39,129.62 : x
  2. Step 2: Convert to fraction form
    105,688.90/158,554.03 = 39,129.62/x
  3. Step 3: Cross multiply
    105,688.90x = 158,554.03 × 39,129.62
  4. Step 4: Simplify right side
    105,688.90x = 6,204,158,943.37
  5. Step 5: Solve for x
    x = 6,204,158,943.37/105,688.90
  6. Step 6: Final answer
    x = 58,702.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.