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Finding the Fourth Proportional to 172,318.99, 258,478.58 and 53,999.59

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Solution

The fourth proportional to 172,318.99, 258,478.58 and 53,999.59 is: 80,999.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,318.99 : 258,478.58 = 53,999.59 : x
  2. Step 2: Convert to fraction form
    172,318.99/258,478.58 = 53,999.59/x
  3. Step 3: Cross multiply
    172,318.99x = 258,478.58 × 53,999.59
  4. Step 4: Simplify right side
    172,318.99x = 13,957,736,427.59
  5. Step 5: Solve for x
    x = 13,957,736,427.59/172,318.99
  6. Step 6: Final answer
    x = 80,999.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.