Home / 121,981.06-168,334.72-68,271.07

Finding the Fourth Proportional to 121,981.06, 168,334.72 and 68,271.07

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Solution

The fourth proportional to 121,981.06, 168,334.72 and 68,271.07 is: 94,214.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,981.06 : 168,334.72 = 68,271.07 : x
  2. Step 2: Convert to fraction form
    121,981.06/168,334.72 = 68,271.07/x
  3. Step 3: Cross multiply
    121,981.06x = 168,334.72 × 68,271.07
  4. Step 4: Simplify right side
    121,981.06x = 11,492,391,452.55
  5. Step 5: Solve for x
    x = 11,492,391,452.55/121,981.06
  6. Step 6: Final answer
    x = 94,214.56

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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.