Home / 236,678.18-355,020.41-78,906.68

Finding the Fourth Proportional to 236,678.18, 355,020.41 and 78,906.68

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Solution

The fourth proportional to 236,678.18, 355,020.41 and 78,906.68 is: 118,361.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,678.18 : 355,020.41 = 78,906.68 : x
  2. Step 2: Convert to fraction form
    236,678.18/355,020.41 = 78,906.68/x
  3. Step 3: Cross multiply
    236,678.18x = 355,020.41 × 78,906.68
  4. Step 4: Simplify right side
    236,678.18x = 28,013,482,082.51
  5. Step 5: Solve for x
    x = 28,013,482,082.51/236,678.18
  6. Step 6: Final answer
    x = 118,361.07

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1.5x scale

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.