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Finding the Fourth Proportional to 108,210, 149,329.50 and 60,463.40

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Solution

The fourth proportional to 108,210, 149,329.50 and 60,463.40 is: 83,439.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,210 : 149,329.50 = 60,463.40 : x
  2. Step 2: Convert to fraction form
    108,210/149,329.50 = 60,463.40/x
  3. Step 3: Cross multiply
    108,210x = 149,329.50 × 60,463.40
  4. Step 4: Simplify right side
    108,210x = 9,028,969,290.30
  5. Step 5: Solve for x
    x = 9,028,969,290.30/108,210
  6. Step 6: Final answer
    x = 83,439.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.