Home / 102,918.70-154,312.35-43,723.90

Finding the Fourth Proportional to 102,918.70, 154,312.35 and 43,723.90

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Solution

The fourth proportional to 102,918.70, 154,312.35 and 43,723.90 is: 65,557.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,918.70 : 154,312.35 = 43,723.90 : x
  2. Step 2: Convert to fraction form
    102,918.70/154,312.35 = 43,723.90/x
  3. Step 3: Cross multiply
    102,918.70x = 154,312.35 × 43,723.90
  4. Step 4: Simplify right side
    102,918.70x = 6,747,137,760.17
  5. Step 5: Solve for x
    x = 6,747,137,760.17/102,918.70
  6. Step 6: Final answer
    x = 65,557.94

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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.