Home / 146,895.80-220,343.70-139,638.20

Finding the Fourth Proportional to 146,895.80, 220,343.70 and 139,638.20

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Solution

The fourth proportional to 146,895.80, 220,343.70 and 139,638.20 is: 209,457.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,895.80 : 220,343.70 = 139,638.20 : x
  2. Step 2: Convert to fraction form
    146,895.80/220,343.70 = 139,638.20/x
  3. Step 3: Cross multiply
    146,895.80x = 220,343.70 × 139,638.20
  4. Step 4: Simplify right side
    146,895.80x = 30,768,397,649.34
  5. Step 5: Solve for x
    x = 30,768,397,649.34/146,895.80
  6. Step 6: Final answer
    x = 209,457.30

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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.