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Finding the Fourth Proportional to 140,554.36, 210,900.81 and 65,679.67

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Solution

The fourth proportional to 140,554.36, 210,900.81 and 65,679.67 is: 98,551.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,554.36 : 210,900.81 = 65,679.67 : x
  2. Step 2: Convert to fraction form
    140,554.36/210,900.81 = 65,679.67/x
  3. Step 3: Cross multiply
    140,554.36x = 210,900.81 × 65,679.67
  4. Step 4: Simplify right side
    140,554.36x = 13,851,895,603.53
  5. Step 5: Solve for x
    x = 13,851,895,603.53/140,554.36
  6. Step 6: Final answer
    x = 98,551.87

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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.