Home / 172,120.34-237,640.43-107,686.67

Finding the Fourth Proportional to 172,120.34, 237,640.43 and 107,686.67

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Solution

The fourth proportional to 172,120.34, 237,640.43 and 107,686.67 is: 148,679.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,120.34 : 237,640.43 = 107,686.67 : x
  2. Step 2: Convert to fraction form
    172,120.34/237,640.43 = 107,686.67/x
  3. Step 3: Cross multiply
    172,120.34x = 237,640.43 × 107,686.67
  4. Step 4: Simplify right side
    172,120.34x = 25,590,705,645.08
  5. Step 5: Solve for x
    x = 25,590,705,645.08/172,120.34
  6. Step 6: Final answer
    x = 148,679.15

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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.