Home / 163,287.90-225,321.75-91,651.50

Finding the Fourth Proportional to 163,287.90, 225,321.75 and 91,651.50

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Solution

The fourth proportional to 163,287.90, 225,321.75 and 91,651.50 is: 126,470.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,287.90 : 225,321.75 = 91,651.50 : x
  2. Step 2: Convert to fraction form
    163,287.90/225,321.75 = 91,651.50/x
  3. Step 3: Cross multiply
    163,287.90x = 225,321.75 × 91,651.50
  4. Step 4: Simplify right side
    163,287.90x = 20,651,076,370.13
  5. Step 5: Solve for x
    x = 20,651,076,370.13/163,287.90
  6. Step 6: Final answer
    x = 126,470.34

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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.