Home / 172,273.02-258,146.36-72,378.60

Finding the Fourth Proportional to 172,273.02, 258,146.36 and 72,378.60

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Solution

The fourth proportional to 172,273.02, 258,146.36 and 72,378.60 is: 108,457.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,273.02 : 258,146.36 = 72,378.60 : x
  2. Step 2: Convert to fraction form
    172,273.02/258,146.36 = 72,378.60/x
  3. Step 3: Cross multiply
    172,273.02x = 258,146.36 × 72,378.60
  4. Step 4: Simplify right side
    172,273.02x = 18,684,272,131.90
  5. Step 5: Solve for x
    x = 18,684,272,131.90/172,273.02
  6. Step 6: Final answer
    x = 108,457.33

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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.