Home / 121,057.48-166,991.07-72,647.02

Finding the Fourth Proportional to 121,057.48, 166,991.07 and 72,647.02

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Solution

The fourth proportional to 121,057.48, 166,991.07 and 72,647.02 is: 100,211.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,057.48 : 166,991.07 = 72,647.02 : x
  2. Step 2: Convert to fraction form
    121,057.48/166,991.07 = 72,647.02/x
  3. Step 3: Cross multiply
    121,057.48x = 166,991.07 × 72,647.02
  4. Step 4: Simplify right side
    121,057.48x = 12,131,403,602.11
  5. Step 5: Solve for x
    x = 12,131,403,602.11/121,057.48
  6. Step 6: Final answer
    x = 100,211.93

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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.