Home / 186,321.16-279,617.10-139,699.72

Finding the Fourth Proportional to 186,321.16, 279,617.10 and 139,699.72

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Solution

The fourth proportional to 186,321.16, 279,617.10 and 139,699.72 is: 209,651.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,321.16 : 279,617.10 = 139,699.72 : x
  2. Step 2: Convert to fraction form
    186,321.16/279,617.10 = 139,699.72/x
  3. Step 3: Cross multiply
    186,321.16x = 279,617.10 × 139,699.72
  4. Step 4: Simplify right side
    186,321.16x = 39,062,430,577.21
  5. Step 5: Solve for x
    x = 39,062,430,577.21/186,321.16
  6. Step 6: Final answer
    x = 209,651.07

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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.