Home / 103,680.08-154,450.08-100,543.86

Finding the Fourth Proportional to 103,680.08, 154,450.08 and 100,543.86

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Solution

The fourth proportional to 103,680.08, 154,450.08 and 100,543.86 is: 149,778.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680.08 : 154,450.08 = 100,543.86 : x
  2. Step 2: Convert to fraction form
    103,680.08/154,450.08 = 100,543.86/x
  3. Step 3: Cross multiply
    103,680.08x = 154,450.08 × 100,543.86
  4. Step 4: Simplify right side
    103,680.08x = 15,529,007,220.51
  5. Step 5: Solve for x
    x = 15,529,007,220.51/103,680.08
  6. Step 6: Final answer
    x = 149,778.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.