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Finding the Fourth Proportional to 108,216.64, 149,339.70 and 60,472

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Solution

The fourth proportional to 108,216.64, 149,339.70 and 60,472 is: 83,451.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,216.64 : 149,339.70 = 60,472 : x
  2. Step 2: Convert to fraction form
    108,216.64/149,339.70 = 60,472/x
  3. Step 3: Cross multiply
    108,216.64x = 149,339.70 × 60,472
  4. Step 4: Simplify right side
    108,216.64x = 9,030,870,338.40
  5. Step 5: Solve for x
    x = 9,030,870,338.40/108,216.64
  6. Step 6: Final answer
    x = 83,451.77

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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.