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Finding the Fourth Proportional to 129,080.88, 192,929.28 and 116,401.68

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Solution

The fourth proportional to 129,080.88, 192,929.28 and 116,401.68 is: 173,978.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,080.88 : 192,929.28 = 116,401.68 : x
  2. Step 2: Convert to fraction form
    129,080.88/192,929.28 = 116,401.68/x
  3. Step 3: Cross multiply
    129,080.88x = 192,929.28 × 116,401.68
  4. Step 4: Simplify right side
    129,080.88x = 22,457,292,313.19
  5. Step 5: Solve for x
    x = 22,457,292,313.19/129,080.88
  6. Step 6: Final answer
    x = 173,978.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.