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Finding the Fourth Proportional to 128,097.92, 192,264.08 and 64,961.63

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Solution

The fourth proportional to 128,097.92, 192,264.08 and 64,961.63 is: 97,501.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,097.92 : 192,264.08 = 64,961.63 : x
  2. Step 2: Convert to fraction form
    128,097.92/192,264.08 = 64,961.63/x
  3. Step 3: Cross multiply
    128,097.92x = 192,264.08 × 64,961.63
  4. Step 4: Simplify right side
    128,097.92x = 12,489,786,741.12
  5. Step 5: Solve for x
    x = 12,489,786,741.12/128,097.92
  6. Step 6: Final answer
    x = 97,501.87

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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.