Home / 121,665.30-166,678.66-117,116.82

Finding the Fourth Proportional to 121,665.30, 166,678.66 and 117,116.82

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Solution

The fourth proportional to 121,665.30, 166,678.66 and 117,116.82 is: 160,447.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,665.30 : 166,678.66 = 117,116.82 : x
  2. Step 2: Convert to fraction form
    121,665.30/166,678.66 = 117,116.82/x
  3. Step 3: Cross multiply
    121,665.30x = 166,678.66 × 117,116.82
  4. Step 4: Simplify right side
    121,665.30x = 19,520,874,621.06
  5. Step 5: Solve for x
    x = 19,520,874,621.06/121,665.30
  6. Step 6: Final answer
    x = 160,447.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.