Home / 118,628.85-163,646.51-80,375.31

Finding the Fourth Proportional to 118,628.85, 163,646.51 and 80,375.31

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Solution

The fourth proportional to 118,628.85, 163,646.51 and 80,375.31 is: 110,876.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,628.85 : 163,646.51 = 80,375.31 : x
  2. Step 2: Convert to fraction form
    118,628.85/163,646.51 = 80,375.31/x
  3. Step 3: Cross multiply
    118,628.85x = 163,646.51 × 80,375.31
  4. Step 4: Simplify right side
    118,628.85x = 13,153,139,482.16
  5. Step 5: Solve for x
    x = 13,153,139,482.16/118,628.85
  6. Step 6: Final answer
    x = 110,876.39

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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.