Home / 155,616.93-214,755.57-87,636.33

Finding the Fourth Proportional to 155,616.93, 214,755.57 and 87,636.33

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Solution

The fourth proportional to 155,616.93, 214,755.57 and 87,636.33 is: 120,940.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,616.93 : 214,755.57 = 87,636.33 : x
  2. Step 2: Convert to fraction form
    155,616.93/214,755.57 = 87,636.33/x
  3. Step 3: Cross multiply
    155,616.93x = 214,755.57 × 87,636.33
  4. Step 4: Simplify right side
    155,616.93x = 18,820,390,001.86
  5. Step 5: Solve for x
    x = 18,820,390,001.86/155,616.93
  6. Step 6: Final answer
    x = 120,940.50

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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.