Home / 122,278.36-168,672.47-76,884.40

Finding the Fourth Proportional to 122,278.36, 168,672.47 and 76,884.40

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Solution

The fourth proportional to 122,278.36, 168,672.47 and 76,884.40 is: 106,055.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,278.36 : 168,672.47 = 76,884.40 : x
  2. Step 2: Convert to fraction form
    122,278.36/168,672.47 = 76,884.40/x
  3. Step 3: Cross multiply
    122,278.36x = 168,672.47 × 76,884.40
  4. Step 4: Simplify right side
    122,278.36x = 12,968,281,268.05
  5. Step 5: Solve for x
    x = 12,968,281,268.05/122,278.36
  6. Step 6: Final answer
    x = 106,055.41

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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.