Home / 130,987.95-196,481.93-78,370.35

Finding the Fourth Proportional to 130,987.95, 196,481.93 and 78,370.35

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Solution

The fourth proportional to 130,987.95, 196,481.93 and 78,370.35 is: 117,555.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,987.95 : 196,481.93 = 78,370.35 : x
  2. Step 2: Convert to fraction form
    130,987.95/196,481.93 = 78,370.35/x
  3. Step 3: Cross multiply
    130,987.95x = 196,481.93 × 78,370.35
  4. Step 4: Simplify right side
    130,987.95x = 15,398,357,230.92
  5. Step 5: Solve for x
    x = 15,398,357,230.92/130,987.95
  6. Step 6: Final answer
    x = 117,555.53

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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.