Home / 124,863.05-172,450.10-115,415.21

Finding the Fourth Proportional to 124,863.05, 172,450.10 and 115,415.21

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Solution

The fourth proportional to 124,863.05, 172,450.10 and 115,415.21 is: 159,401.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,863.05 : 172,450.10 = 115,415.21 : x
  2. Step 2: Convert to fraction form
    124,863.05/172,450.10 = 115,415.21/x
  3. Step 3: Cross multiply
    124,863.05x = 172,450.10 × 115,415.21
  4. Step 4: Simplify right side
    124,863.05x = 19,903,364,506.02
  5. Step 5: Solve for x
    x = 19,903,364,506.02/124,863.05
  6. Step 6: Final answer
    x = 159,401.56

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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.