Home / 259,056.80-388,585.20-72,068.30

Finding the Fourth Proportional to 259,056.80, 388,585.20 and 72,068.30

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Solution

The fourth proportional to 259,056.80, 388,585.20 and 72,068.30 is: 108,102.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,056.80 : 388,585.20 = 72,068.30 : x
  2. Step 2: Convert to fraction form
    259,056.80/388,585.20 = 72,068.30/x
  3. Step 3: Cross multiply
    259,056.80x = 388,585.20 × 72,068.30
  4. Step 4: Simplify right side
    259,056.80x = 28,004,674,769.16
  5. Step 5: Solve for x
    x = 28,004,674,769.16/259,056.80
  6. Step 6: Final answer
    x = 108,102.45

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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.