Home / 112,121.12-154,738.08-83,777.60

Finding the Fourth Proportional to 112,121.12, 154,738.08 and 83,777.60

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Solution

The fourth proportional to 112,121.12, 154,738.08 and 83,777.60 is: 115,621.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,121.12 : 154,738.08 = 83,777.60 : x
  2. Step 2: Convert to fraction form
    112,121.12/154,738.08 = 83,777.60/x
  3. Step 3: Cross multiply
    112,121.12x = 154,738.08 × 83,777.60
  4. Step 4: Simplify right side
    112,121.12x = 12,963,584,971.01
  5. Step 5: Solve for x
    x = 12,963,584,971.01/112,121.12
  6. Step 6: Final answer
    x = 115,621.26

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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.