Home / 105,539.40-158,438.70-104,761.80

Finding the Fourth Proportional to 105,539.40, 158,438.70 and 104,761.80

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Solution

The fourth proportional to 105,539.40, 158,438.70 and 104,761.80 is: 157,271.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,539.40 : 158,438.70 = 104,761.80 : x
  2. Step 2: Convert to fraction form
    105,539.40/158,438.70 = 104,761.80/x
  3. Step 3: Cross multiply
    105,539.40x = 158,438.70 × 104,761.80
  4. Step 4: Simplify right side
    105,539.40x = 16,598,323,401.66
  5. Step 5: Solve for x
    x = 16,598,323,401.66/105,539.40
  6. Step 6: Final answer
    x = 157,271.35

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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.