Home / 149,400.51-206,166.71-81,416.04

Finding the Fourth Proportional to 149,400.51, 206,166.71 and 81,416.04

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Solution

The fourth proportional to 149,400.51, 206,166.71 and 81,416.04 is: 112,350.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,400.51 : 206,166.71 = 81,416.04 : x
  2. Step 2: Convert to fraction form
    149,400.51/206,166.71 = 81,416.04/x
  3. Step 3: Cross multiply
    149,400.51x = 206,166.71 × 81,416.04
  4. Step 4: Simplify right side
    149,400.51x = 16,785,275,670.11
  5. Step 5: Solve for x
    x = 16,785,275,670.11/149,400.51
  6. Step 6: Final answer
    x = 112,350.86

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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.