Home / 105,695.20-158,145.54-74,166.79

Finding the Fourth Proportional to 105,695.20, 158,145.54 and 74,166.79

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Solution

The fourth proportional to 105,695.20, 158,145.54 and 74,166.79 is: 110,971.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,695.20 : 158,145.54 = 74,166.79 : x
  2. Step 2: Convert to fraction form
    105,695.20/158,145.54 = 74,166.79/x
  3. Step 3: Cross multiply
    105,695.20x = 158,145.54 × 74,166.79
  4. Step 4: Simplify right side
    105,695.20x = 11,729,146,886.24
  5. Step 5: Solve for x
    x = 11,729,146,886.24/105,695.20
  6. Step 6: Final answer
    x = 110,971.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.