Home / 149,401.51-206,168.08-81,417.04

Finding the Fourth Proportional to 149,401.51, 206,168.08 and 81,417.04

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Solution

The fourth proportional to 149,401.51, 206,168.08 and 81,417.04 is: 112,352.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,401.51 : 206,168.08 = 81,417.04 : x
  2. Step 2: Convert to fraction form
    149,401.51/206,168.08 = 81,417.04/x
  3. Step 3: Cross multiply
    149,401.51x = 206,168.08 × 81,417.04
  4. Step 4: Simplify right side
    149,401.51x = 16,785,594,816.08
  5. Step 5: Solve for x
    x = 16,785,594,816.08/149,401.51
  6. Step 6: Final answer
    x = 112,352.24

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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.