Home / 172,420.75-237,904.96-100,786.91

Finding the Fourth Proportional to 172,420.75, 237,904.96 and 100,786.91

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Solution

The fourth proportional to 172,420.75, 237,904.96 and 100,786.91 is: 139,065.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,420.75 : 237,904.96 = 100,786.91 : x
  2. Step 2: Convert to fraction form
    172,420.75/237,904.96 = 100,786.91/x
  3. Step 3: Cross multiply
    172,420.75x = 237,904.96 × 100,786.91
  4. Step 4: Simplify right side
    172,420.75x = 23,977,705,792.07
  5. Step 5: Solve for x
    x = 23,977,705,792.07/172,420.75
  6. Step 6: Final answer
    x = 139,065.08

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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.