Home / 149,782.88-206,702.03-81,801.86

Finding the Fourth Proportional to 149,782.88, 206,702.03 and 81,801.86

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Solution

The fourth proportional to 149,782.88, 206,702.03 and 81,801.86 is: 112,887.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,782.88 : 206,702.03 = 81,801.86 : x
  2. Step 2: Convert to fraction form
    149,782.88/206,702.03 = 81,801.86/x
  3. Step 3: Cross multiply
    149,782.88x = 206,702.03 × 81,801.86
  4. Step 4: Simplify right side
    149,782.88x = 16,908,609,077.26
  5. Step 5: Solve for x
    x = 16,908,609,077.26/149,782.88
  6. Step 6: Final answer
    x = 112,887.47

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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.