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Finding the Fourth Proportional to 192,555.12, 288,901.08 and 85,929.40

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Solution

The fourth proportional to 192,555.12, 288,901.08 and 85,929.40 is: 128,924.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,555.12 : 288,901.08 = 85,929.40 : x
  2. Step 2: Convert to fraction form
    192,555.12/288,901.08 = 85,929.40/x
  3. Step 3: Cross multiply
    192,555.12x = 288,901.08 × 85,929.40
  4. Step 4: Simplify right side
    192,555.12x = 24,825,096,463.75
  5. Step 5: Solve for x
    x = 24,825,096,463.75/192,555.12
  6. Step 6: Final answer
    x = 128,924.62

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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.