Home / 121,977.50-168,336.36-68,261.40

Finding the Fourth Proportional to 121,977.50, 168,336.36 and 68,261.40

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Solution

The fourth proportional to 121,977.50, 168,336.36 and 68,261.40 is: 94,204.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,977.50 : 168,336.36 = 68,261.40 : x
  2. Step 2: Convert to fraction form
    121,977.50/168,336.36 = 68,261.40/x
  3. Step 3: Cross multiply
    121,977.50x = 168,336.36 × 68,261.40
  4. Step 4: Simplify right side
    121,977.50x = 11,490,875,604.50
  5. Step 5: Solve for x
    x = 11,490,875,604.50/121,977.50
  6. Step 6: Final answer
    x = 94,204.88

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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.