Home / 143,388.36-197,823.06-86,779.08

Finding the Fourth Proportional to 143,388.36, 197,823.06 and 86,779.08

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Solution

The fourth proportional to 143,388.36, 197,823.06 and 86,779.08 is: 119,723.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,388.36 : 197,823.06 = 86,779.08 : x
  2. Step 2: Convert to fraction form
    143,388.36/197,823.06 = 86,779.08/x
  3. Step 3: Cross multiply
    143,388.36x = 197,823.06 × 86,779.08
  4. Step 4: Simplify right side
    143,388.36x = 17,166,903,149.58
  5. Step 5: Solve for x
    x = 17,166,903,149.58/143,388.36
  6. Step 6: Final answer
    x = 119,723.13

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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.