Home / 130,378.76-179,880.55-73,009.49

Finding the Fourth Proportional to 130,378.76, 179,880.55 and 73,009.49

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Solution

The fourth proportional to 130,378.76, 179,880.55 and 73,009.49 is: 100,729.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,378.76 : 179,880.55 = 73,009.49 : x
  2. Step 2: Convert to fraction form
    130,378.76/179,880.55 = 73,009.49/x
  3. Step 3: Cross multiply
    130,378.76x = 179,880.55 × 73,009.49
  4. Step 4: Simplify right side
    130,378.76x = 13,132,987,216.42
  5. Step 5: Solve for x
    x = 13,132,987,216.42/130,378.76
  6. Step 6: Final answer
    x = 100,729.50

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1.5x scale

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.