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Finding the Fourth Proportional to 192,707.89, 288,990.01 and 66,312.79

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Solution

The fourth proportional to 192,707.89, 288,990.01 and 66,312.79 is: 99,444.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,707.89 : 288,990.01 = 66,312.79 : x
  2. Step 2: Convert to fraction form
    192,707.89/288,990.01 = 66,312.79/x
  3. Step 3: Cross multiply
    192,707.89x = 288,990.01 × 66,312.79
  4. Step 4: Simplify right side
    192,707.89x = 19,163,733,845.23
  5. Step 5: Solve for x
    x = 19,163,733,845.23/192,707.89
  6. Step 6: Final answer
    x = 99,444.47

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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.