Home / 112,324.15-154,743.90-78,270.84

Finding the Fourth Proportional to 112,324.15, 154,743.90 and 78,270.84

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Solution

The fourth proportional to 112,324.15, 154,743.90 and 78,270.84 is: 107,830.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,324.15 : 154,743.90 = 78,270.84 : x
  2. Step 2: Convert to fraction form
    112,324.15/154,743.90 = 78,270.84/x
  3. Step 3: Cross multiply
    112,324.15x = 154,743.90 × 78,270.84
  4. Step 4: Simplify right side
    112,324.15x = 12,111,934,744.36
  5. Step 5: Solve for x
    x = 12,111,934,744.36/112,324.15
  6. Step 6: Final answer
    x = 107,830.19

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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.