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Finding the Fourth Proportional to 108,539.68, 149,789.36 and 63,210.36

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Solution

The fourth proportional to 108,539.68, 149,789.36 and 63,210.36 is: 87,232.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,539.68 : 149,789.36 = 63,210.36 : x
  2. Step 2: Convert to fraction form
    108,539.68/149,789.36 = 63,210.36/x
  3. Step 3: Cross multiply
    108,539.68x = 149,789.36 × 63,210.36
  4. Step 4: Simplify right side
    108,539.68x = 9,468,239,369.77
  5. Step 5: Solve for x
    x = 9,468,239,369.77/108,539.68
  6. Step 6: Final answer
    x = 87,232.98

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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.