Home / 121,942.32-168,280.40-68,239.96

Finding the Fourth Proportional to 121,942.32, 168,280.40 and 68,239.96

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Solution

The fourth proportional to 121,942.32, 168,280.40 and 68,239.96 is: 94,171.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,942.32 : 168,280.40 = 68,239.96 : x
  2. Step 2: Convert to fraction form
    121,942.32/168,280.40 = 68,239.96/x
  3. Step 3: Cross multiply
    121,942.32x = 168,280.40 × 68,239.96
  4. Step 4: Simplify right side
    121,942.32x = 11,483,447,764.78
  5. Step 5: Solve for x
    x = 11,483,447,764.78/121,942.32
  6. Step 6: Final answer
    x = 94,171.14

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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.