Home / 345,921.40-518,897.62-106,017.72

Finding the Fourth Proportional to 345,921.40, 518,897.62 and 106,017.72

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Solution

The fourth proportional to 345,921.40, 518,897.62 and 106,017.72 is: 159,031.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,921.40 : 518,897.62 = 106,017.72 : x
  2. Step 2: Convert to fraction form
    345,921.40/518,897.62 = 106,017.72/x
  3. Step 3: Cross multiply
    345,921.40x = 518,897.62 × 106,017.72
  4. Step 4: Simplify right side
    345,921.40x = 55,012,342,585.83
  5. Step 5: Solve for x
    x = 55,012,342,585.83/345,921.40
  6. Step 6: Final answer
    x = 159,031.34

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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.