Home / 130,039.83-179,439.84-72,679.27

Finding the Fourth Proportional to 130,039.83, 179,439.84 and 72,679.27

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Solution

The fourth proportional to 130,039.83, 179,439.84 and 72,679.27 is: 100,288.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,039.83 : 179,439.84 = 72,679.27 : x
  2. Step 2: Convert to fraction form
    130,039.83/179,439.84 = 72,679.27/x
  3. Step 3: Cross multiply
    130,039.83x = 179,439.84 × 72,679.27
  4. Step 4: Simplify right side
    130,039.83x = 13,041,556,580.12
  5. Step 5: Solve for x
    x = 13,041,556,580.12/130,039.83
  6. Step 6: Final answer
    x = 100,288.94

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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.