Home / 155,219.22-214,220.28-86,315.55

Finding the Fourth Proportional to 155,219.22, 214,220.28 and 86,315.55

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Solution

The fourth proportional to 155,219.22, 214,220.28 and 86,315.55 is: 119,125.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,219.22 : 214,220.28 = 86,315.55 : x
  2. Step 2: Convert to fraction form
    155,219.22/214,220.28 = 86,315.55/x
  3. Step 3: Cross multiply
    155,219.22x = 214,220.28 × 86,315.55
  4. Step 4: Simplify right side
    155,219.22x = 18,490,541,289.35
  5. Step 5: Solve for x
    x = 18,490,541,289.35/155,219.22
  6. Step 6: Final answer
    x = 119,125.33

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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.