Home / 121,840.05-168,145.80-73,457.46

Finding the Fourth Proportional to 121,840.05, 168,145.80 and 73,457.46

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Solution

The fourth proportional to 121,840.05, 168,145.80 and 73,457.46 is: 101,375.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,840.05 : 168,145.80 = 73,457.46 : x
  2. Step 2: Convert to fraction form
    121,840.05/168,145.80 = 73,457.46/x
  3. Step 3: Cross multiply
    121,840.05x = 168,145.80 × 73,457.46
  4. Step 4: Simplify right side
    121,840.05x = 12,351,563,377.67
  5. Step 5: Solve for x
    x = 12,351,563,377.67/121,840.05
  6. Step 6: Final answer
    x = 101,375.23

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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.