Home / 155,698.47-214,808.36-91,991.43

Finding the Fourth Proportional to 155,698.47, 214,808.36 and 91,991.43

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Solution

The fourth proportional to 155,698.47, 214,808.36 and 91,991.43 is: 126,915.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,698.47 : 214,808.36 = 91,991.43 : x
  2. Step 2: Convert to fraction form
    155,698.47/214,808.36 = 91,991.43/x
  3. Step 3: Cross multiply
    155,698.47x = 214,808.36 × 91,991.43
  4. Step 4: Simplify right side
    155,698.47x = 19,760,527,752.40
  5. Step 5: Solve for x
    x = 19,760,527,752.40/155,698.47
  6. Step 6: Final answer
    x = 126,915.36

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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.