Home / 163,534.20-245,301.30-128,104.80

Finding the Fourth Proportional to 163,534.20, 245,301.30 and 128,104.80

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Solution

The fourth proportional to 163,534.20, 245,301.30 and 128,104.80 is: 192,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,534.20 : 245,301.30 = 128,104.80 : x
  2. Step 2: Convert to fraction form
    163,534.20/245,301.30 = 128,104.80/x
  3. Step 3: Cross multiply
    163,534.20x = 245,301.30 × 128,104.80
  4. Step 4: Simplify right side
    163,534.20x = 31,424,273,976.24
  5. Step 5: Solve for x
    x = 31,424,273,976.24/163,534.20
  6. Step 6: Final answer
    x = 192,157.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.