Home / 149,415.03-206,187.48-81,430.65

Finding the Fourth Proportional to 149,415.03, 206,187.48 and 81,430.65

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Solution

The fourth proportional to 149,415.03, 206,187.48 and 81,430.65 is: 112,371.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,415.03 : 206,187.48 = 81,430.65 : x
  2. Step 2: Convert to fraction form
    149,415.03/206,187.48 = 81,430.65/x
  3. Step 3: Cross multiply
    149,415.03x = 206,187.48 × 81,430.65
  4. Step 4: Simplify right side
    149,415.03x = 16,789,980,518.26
  5. Step 5: Solve for x
    x = 16,789,980,518.26/149,415.03
  6. Step 6: Final answer
    x = 112,371.43

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1.5x scale

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.