Home / 216,108.81-298,388.21-139,673.16

Finding the Fourth Proportional to 216,108.81, 298,388.21 and 139,673.16

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Solution

The fourth proportional to 216,108.81, 298,388.21 and 139,673.16 is: 192,851.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,108.81 : 298,388.21 = 139,673.16 : x
  2. Step 2: Convert to fraction form
    216,108.81/298,388.21 = 139,673.16/x
  3. Step 3: Cross multiply
    216,108.81x = 298,388.21 × 139,673.16
  4. Step 4: Simplify right side
    216,108.81x = 41,676,823,499.08
  5. Step 5: Solve for x
    x = 41,676,823,499.08/216,108.81
  6. Step 6: Final answer
    x = 192,851.11

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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.