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Finding the Fourth Proportional to 108,143.64, 149,216.55 and 60,389.64

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Solution

The fourth proportional to 108,143.64, 149,216.55 and 60,389.64 is: 83,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,143.64 : 149,216.55 = 60,389.64 : x
  2. Step 2: Convert to fraction form
    108,143.64/149,216.55 = 60,389.64/x
  3. Step 3: Cross multiply
    108,143.64x = 149,216.55 × 60,389.64
  4. Step 4: Simplify right side
    108,143.64x = 9,011,133,736.54
  5. Step 5: Solve for x
    x = 9,011,133,736.54/108,143.64
  6. Step 6: Final answer
    x = 83,325.60

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1.5x scale

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.