Home / 128,367.51-177,153.38-71,006.58

Finding the Fourth Proportional to 128,367.51, 177,153.38 and 71,006.58

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Solution

The fourth proportional to 128,367.51, 177,153.38 and 71,006.58 is: 97,992.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,367.51 : 177,153.38 = 71,006.58 : x
  2. Step 2: Convert to fraction form
    128,367.51/177,153.38 = 71,006.58/x
  3. Step 3: Cross multiply
    128,367.51x = 177,153.38 × 71,006.58
  4. Step 4: Simplify right side
    128,367.51x = 12,579,055,649.24
  5. Step 5: Solve for x
    x = 12,579,055,649.24/128,367.51
  6. Step 6: Final answer
    x = 97,992.52

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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.