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Finding the Fourth Proportional to 128,459.65, 192,440.10 and 94,664.32

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Solution

The fourth proportional to 128,459.65, 192,440.10 and 94,664.32 is: 141,812.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,459.65 : 192,440.10 = 94,664.32 : x
  2. Step 2: Convert to fraction form
    128,459.65/192,440.10 = 94,664.32/x
  3. Step 3: Cross multiply
    128,459.65x = 192,440.10 × 94,664.32
  4. Step 4: Simplify right side
    128,459.65x = 18,217,211,207.23
  5. Step 5: Solve for x
    x = 18,217,211,207.23/128,459.65
  6. Step 6: Final answer
    x = 141,812.71

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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.