Home / 165,541.32-248,410.40-86,678.10

Finding the Fourth Proportional to 165,541.32, 248,410.40 and 86,678.10

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Solution

The fourth proportional to 165,541.32, 248,410.40 and 86,678.10 is: 130,068.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,541.32 : 248,410.40 = 86,678.10 : x
  2. Step 2: Convert to fraction form
    165,541.32/248,410.40 = 86,678.10/x
  3. Step 3: Cross multiply
    165,541.32x = 248,410.40 × 86,678.10
  4. Step 4: Simplify right side
    165,541.32x = 21,531,741,058.85
  5. Step 5: Solve for x
    x = 21,531,741,058.85/165,541.32
  6. Step 6: Final answer
    x = 130,068.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.