Home / 140,513.10-210,769.65-139,638.30

Finding the Fourth Proportional to 140,513.10, 210,769.65 and 139,638.30

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Solution

The fourth proportional to 140,513.10, 210,769.65 and 139,638.30 is: 209,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,513.10 : 210,769.65 = 139,638.30 : x
  2. Step 2: Convert to fraction form
    140,513.10/210,769.65 = 139,638.30/x
  3. Step 3: Cross multiply
    140,513.10x = 210,769.65 × 139,638.30
  4. Step 4: Simplify right side
    140,513.10x = 29,431,515,617.60
  5. Step 5: Solve for x
    x = 29,431,515,617.60/140,513.10
  6. Step 6: Final answer
    x = 209,457.45

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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.