Home / 193,759.86-290,705.40-87,132.67

Finding the Fourth Proportional to 193,759.86, 290,705.40 and 87,132.67

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Solution

The fourth proportional to 193,759.86, 290,705.40 and 87,132.67 is: 130,728.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,759.86 : 290,705.40 = 87,132.67 : x
  2. Step 2: Convert to fraction form
    193,759.86/290,705.40 = 87,132.67/x
  3. Step 3: Cross multiply
    193,759.86x = 290,705.40 × 87,132.67
  4. Step 4: Simplify right side
    193,759.86x = 25,329,937,685.42
  5. Step 5: Solve for x
    x = 25,329,937,685.42/193,759.86
  6. Step 6: Final answer
    x = 130,728.51

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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.