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Finding the Fourth Proportional to 132,345.66, 182,616.48 and 78,629.32

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Solution

The fourth proportional to 132,345.66, 182,616.48 and 78,629.32 is: 108,496.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,345.66 : 182,616.48 = 78,629.32 : x
  2. Step 2: Convert to fraction form
    132,345.66/182,616.48 = 78,629.32/x
  3. Step 3: Cross multiply
    132,345.66x = 182,616.48 × 78,629.32
  4. Step 4: Simplify right side
    132,345.66x = 14,359,009,643.19
  5. Step 5: Solve for x
    x = 14,359,009,643.19/132,345.66
  6. Step 6: Final answer
    x = 108,496.26

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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.