Home / 128,835.26-177,792.37-71,483.31

Finding the Fourth Proportional to 128,835.26, 177,792.37 and 71,483.31

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Solution

The fourth proportional to 128,835.26, 177,792.37 and 71,483.31 is: 98,646.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,835.26 : 177,792.37 = 71,483.31 : x
  2. Step 2: Convert to fraction form
    128,835.26/177,792.37 = 71,483.31/x
  3. Step 3: Cross multiply
    128,835.26x = 177,792.37 × 71,483.31
  4. Step 4: Simplify right side
    128,835.26x = 12,709,186,921.64
  5. Step 5: Solve for x
    x = 12,709,186,921.64/128,835.26
  6. Step 6: Final answer
    x = 98,646.81

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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.