Home / 147,139.90-203,051.16-86,713.09

Finding the Fourth Proportional to 147,139.90, 203,051.16 and 86,713.09

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Solution

The fourth proportional to 147,139.90, 203,051.16 and 86,713.09 is: 119,662.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,139.90 : 203,051.16 = 86,713.09 : x
  2. Step 2: Convert to fraction form
    147,139.90/203,051.16 = 86,713.09/x
  3. Step 3: Cross multiply
    147,139.90x = 203,051.16 × 86,713.09
  4. Step 4: Simplify right side
    147,139.90x = 17,607,193,511.68
  5. Step 5: Solve for x
    x = 17,607,193,511.68/147,139.90
  6. Step 6: Final answer
    x = 119,662.94

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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.