Home / 131,388.30-181,316.06-74,799.68

Finding the Fourth Proportional to 131,388.30, 181,316.06 and 74,799.68

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Solution

The fourth proportional to 131,388.30, 181,316.06 and 74,799.68 is: 103,223.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,388.30 : 181,316.06 = 74,799.68 : x
  2. Step 2: Convert to fraction form
    131,388.30/181,316.06 = 74,799.68/x
  3. Step 3: Cross multiply
    131,388.30x = 181,316.06 × 74,799.68
  4. Step 4: Simplify right side
    131,388.30x = 13,562,381,986.28
  5. Step 5: Solve for x
    x = 13,562,381,986.28/131,388.30
  6. Step 6: Final answer
    x = 103,223.67

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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.