Home / 128,004.07-192,172.43-98,442.85

Finding the Fourth Proportional to 128,004.07, 192,172.43 and 98,442.85

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Solution

The fourth proportional to 128,004.07, 192,172.43 and 98,442.85 is: 147,792.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,004.07 : 192,172.43 = 98,442.85 : x
  2. Step 2: Convert to fraction form
    128,004.07/192,172.43 = 98,442.85/x
  3. Step 3: Cross multiply
    128,004.07x = 192,172.43 × 98,442.85
  4. Step 4: Simplify right side
    128,004.07x = 18,918,001,700.63
  5. Step 5: Solve for x
    x = 18,918,001,700.63/128,004.07
  6. Step 6: Final answer
    x = 147,792.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.