Home / 121,767.36-168,030.72-68,049.60

Finding the Fourth Proportional to 121,767.36, 168,030.72 and 68,049.60

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Solution

The fourth proportional to 121,767.36, 168,030.72 and 68,049.60 is: 93,903.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,767.36 : 168,030.72 = 68,049.60 : x
  2. Step 2: Convert to fraction form
    121,767.36/168,030.72 = 68,049.60/x
  3. Step 3: Cross multiply
    121,767.36x = 168,030.72 × 68,049.60
  4. Step 4: Simplify right side
    121,767.36x = 11,434,423,283.71
  5. Step 5: Solve for x
    x = 11,434,423,283.71/121,767.36
  6. Step 6: Final answer
    x = 93,903.84

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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.