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Finding the Fourth Proportional to 155,602.22, 214,728.77 and 87,619.32

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Solution

The fourth proportional to 155,602.22, 214,728.77 and 87,619.32 is: 120,913.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,602.22 : 214,728.77 = 87,619.32 : x
  2. Step 2: Convert to fraction form
    155,602.22/214,728.77 = 87,619.32/x
  3. Step 3: Cross multiply
    155,602.22x = 214,728.77 × 87,619.32
  4. Step 4: Simplify right side
    155,602.22x = 18,814,389,030.88
  5. Step 5: Solve for x
    x = 18,814,389,030.88/155,602.22
  6. Step 6: Final answer
    x = 120,913.38

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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.