Home / 128,733.66-192,788.70-65,387.16

Finding the Fourth Proportional to 128,733.66, 192,788.70 and 65,387.16

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Solution

The fourth proportional to 128,733.66, 192,788.70 and 65,387.16 is: 97,922.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,733.66 : 192,788.70 = 65,387.16 : x
  2. Step 2: Convert to fraction form
    128,733.66/192,788.70 = 65,387.16/x
  3. Step 3: Cross multiply
    128,733.66x = 192,788.70 × 65,387.16
  4. Step 4: Simplify right side
    128,733.66x = 12,605,905,573.09
  5. Step 5: Solve for x
    x = 12,605,905,573.09/128,733.66
  6. Step 6: Final answer
    x = 97,922.37

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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.