Home / 155,259.50-214,256.20-87,287.81

Finding the Fourth Proportional to 155,259.50, 214,256.20 and 87,287.81

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Solution

The fourth proportional to 155,259.50, 214,256.20 and 87,287.81 is: 120,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,259.50 : 214,256.20 = 87,287.81 : x
  2. Step 2: Convert to fraction form
    155,259.50/214,256.20 = 87,287.81/x
  3. Step 3: Cross multiply
    155,259.50x = 214,256.20 × 87,287.81
  4. Step 4: Simplify right side
    155,259.50x = 18,701,954,476.92
  5. Step 5: Solve for x
    x = 18,701,954,476.92/155,259.50
  6. Step 6: Final answer
    x = 120,456.10

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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.