Home / 121,823.78-168,118.02-68,111.75

Finding the Fourth Proportional to 121,823.78, 168,118.02 and 68,111.75

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Solution

The fourth proportional to 121,823.78, 168,118.02 and 68,111.75 is: 93,994.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,823.78 : 168,118.02 = 68,111.75 : x
  2. Step 2: Convert to fraction form
    121,823.78/168,118.02 = 68,111.75/x
  3. Step 3: Cross multiply
    121,823.78x = 168,118.02 × 68,111.75
  4. Step 4: Simplify right side
    121,823.78x = 11,450,812,548.74
  5. Step 5: Solve for x
    x = 11,450,812,548.74/121,823.78
  6. Step 6: Final answer
    x = 93,994.89

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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.