Home / 216,099.07-298,255.75-128,889.77

Finding the Fourth Proportional to 216,099.07, 298,255.75 and 128,889.77

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Solution

The fourth proportional to 216,099.07, 298,255.75 and 128,889.77 is: 177,891.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,099.07 : 298,255.75 = 128,889.77 : x
  2. Step 2: Convert to fraction form
    216,099.07/298,255.75 = 128,889.77/x
  3. Step 3: Cross multiply
    216,099.07x = 298,255.75 × 128,889.77
  4. Step 4: Simplify right side
    216,099.07x = 38,442,113,205.17
  5. Step 5: Solve for x
    x = 38,442,113,205.17/216,099.07
  6. Step 6: Final answer
    x = 177,891.16

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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.