Home / 187,105.74-258,132.65-115,361.21

Finding the Fourth Proportional to 187,105.74, 258,132.65 and 115,361.21

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Solution

The fourth proportional to 187,105.74, 258,132.65 and 115,361.21 is: 159,153.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,105.74 : 258,132.65 = 115,361.21 : x
  2. Step 2: Convert to fraction form
    187,105.74/258,132.65 = 115,361.21/x
  3. Step 3: Cross multiply
    187,105.74x = 258,132.65 × 115,361.21
  4. Step 4: Simplify right side
    187,105.74x = 29,778,492,977.04
  5. Step 5: Solve for x
    x = 29,778,492,977.04/187,105.74
  6. Step 6: Final answer
    x = 159,153.28

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1.5x scale

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.