Home / 161,762.20-242,643.30-139,211.80

Finding the Fourth Proportional to 161,762.20, 242,643.30 and 139,211.80

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Solution

The fourth proportional to 161,762.20, 242,643.30 and 139,211.80 is: 208,817.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,762.20 : 242,643.30 = 139,211.80 : x
  2. Step 2: Convert to fraction form
    161,762.20/242,643.30 = 139,211.80/x
  3. Step 3: Cross multiply
    161,762.20x = 242,643.30 × 139,211.80
  4. Step 4: Simplify right side
    161,762.20x = 33,778,810,550.94
  5. Step 5: Solve for x
    x = 33,778,810,550.94/161,762.20
  6. Step 6: Final answer
    x = 208,817.70

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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.