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Finding the Fourth Proportional to 155,525.78, 214,625.55 and 88,457.78

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Solution

The fourth proportional to 155,525.78, 214,625.55 and 88,457.78 is: 122,071.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,525.78 : 214,625.55 = 88,457.78 : x
  2. Step 2: Convert to fraction form
    155,525.78/214,625.55 = 88,457.78/x
  3. Step 3: Cross multiply
    155,525.78x = 214,625.55 × 88,457.78
  4. Step 4: Simplify right side
    155,525.78x = 18,985,299,684.28
  5. Step 5: Solve for x
    x = 18,985,299,684.28/155,525.78
  6. Step 6: Final answer
    x = 122,071.72

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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.