Home / 138,085.08-207,148.12-43,323.06

Finding the Fourth Proportional to 138,085.08, 207,148.12 and 43,323.06

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Solution

The fourth proportional to 138,085.08, 207,148.12 and 43,323.06 is: 64,991.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,085.08 : 207,148.12 = 43,323.06 : x
  2. Step 2: Convert to fraction form
    138,085.08/207,148.12 = 43,323.06/x
  3. Step 3: Cross multiply
    138,085.08x = 207,148.12 × 43,323.06
  4. Step 4: Simplify right side
    138,085.08x = 8,974,290,431.65
  5. Step 5: Solve for x
    x = 8,974,290,431.65/138,085.08
  6. Step 6: Final answer
    x = 64,991.02

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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.