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Finding the Fourth Proportional to 140,553.36, 210,899.31 and 65,678.67

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Solution

The fourth proportional to 140,553.36, 210,899.31 and 65,678.67 is: 98,550.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,553.36 : 210,899.31 = 65,678.67 : x
  2. Step 2: Convert to fraction form
    140,553.36/210,899.31 = 65,678.67/x
  3. Step 3: Cross multiply
    140,553.36x = 210,899.31 × 65,678.67
  4. Step 4: Simplify right side
    140,553.36x = 13,851,586,184.72
  5. Step 5: Solve for x
    x = 13,851,586,184.72/140,553.36
  6. Step 6: Final answer
    x = 98,550.37

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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.