Home / 130,187.45-179,650.20-72,816.84

Finding the Fourth Proportional to 130,187.45, 179,650.20 and 72,816.84

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Solution

The fourth proportional to 130,187.45, 179,650.20 and 72,816.84 is: 100,482.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,187.45 : 179,650.20 = 72,816.84 : x
  2. Step 2: Convert to fraction form
    130,187.45/179,650.20 = 72,816.84/x
  3. Step 3: Cross multiply
    130,187.45x = 179,650.20 × 72,816.84
  4. Step 4: Simplify right side
    130,187.45x = 13,081,560,142.43
  5. Step 5: Solve for x
    x = 13,081,560,142.43/130,187.45
  6. Step 6: Final answer
    x = 100,482.50

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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.