Home / 155,191.20-214,191.76-91,525.28

Finding the Fourth Proportional to 155,191.20, 214,191.76 and 91,525.28

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Solution

The fourth proportional to 155,191.20, 214,191.76 and 91,525.28 is: 126,321.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,191.20 : 214,191.76 = 91,525.28 : x
  2. Step 2: Convert to fraction form
    155,191.20/214,191.76 = 91,525.28/x
  3. Step 3: Cross multiply
    155,191.20x = 214,191.76 × 91,525.28
  4. Step 4: Simplify right side
    155,191.20x = 19,603,960,807.69
  5. Step 5: Solve for x
    x = 19,603,960,807.69/155,191.20
  6. Step 6: Final answer
    x = 126,321.34

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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.