Home / 128,461.55-177,297.93-88,142.04

Finding the Fourth Proportional to 128,461.55, 177,297.93 and 88,142.04

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Solution

The fourth proportional to 128,461.55, 177,297.93 and 88,142.04 is: 121,650.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,461.55 : 177,297.93 = 88,142.04 : x
  2. Step 2: Convert to fraction form
    128,461.55/177,297.93 = 88,142.04/x
  3. Step 3: Cross multiply
    128,461.55x = 177,297.93 × 88,142.04
  4. Step 4: Simplify right side
    128,461.55x = 15,627,401,237.98
  5. Step 5: Solve for x
    x = 15,627,401,237.98/128,461.55
  6. Step 6: Final answer
    x = 121,650.42

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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.