Home / 155,405.96-214,461.06-91,775.16

Finding the Fourth Proportional to 155,405.96, 214,461.06 and 91,775.16

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Solution

The fourth proportional to 155,405.96, 214,461.06 and 91,775.16 is: 126,650.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,405.96 : 214,461.06 = 91,775.16 : x
  2. Step 2: Convert to fraction form
    155,405.96/214,461.06 = 91,775.16/x
  3. Step 3: Cross multiply
    155,405.96x = 214,461.06 × 91,775.16
  4. Step 4: Simplify right side
    155,405.96x = 19,682,198,095.27
  5. Step 5: Solve for x
    x = 19,682,198,095.27/155,405.96
  6. Step 6: Final answer
    x = 126,650.21

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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.