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Finding the Fourth Proportional to 147,686, 221,621.16 and 60,134

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Solution

The fourth proportional to 147,686, 221,621.16 and 60,134 is: 90,238.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,686 : 221,621.16 = 60,134 : x
  2. Step 2: Convert to fraction form
    147,686/221,621.16 = 60,134/x
  3. Step 3: Cross multiply
    147,686x = 221,621.16 × 60,134
  4. Step 4: Simplify right side
    147,686x = 13,326,966,835.44
  5. Step 5: Solve for x
    x = 13,326,966,835.44/147,686
  6. Step 6: Final answer
    x = 90,238.53

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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.