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Finding the Fourth Proportional to 199,740.58, 299,612.01 and 66,620.45

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Solution

The fourth proportional to 199,740.58, 299,612.01 and 66,620.45 is: 99,931.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,740.58 : 299,612.01 = 66,620.45 : x
  2. Step 2: Convert to fraction form
    199,740.58/299,612.01 = 66,620.45/x
  3. Step 3: Cross multiply
    199,740.58x = 299,612.01 × 66,620.45
  4. Step 4: Simplify right side
    199,740.58x = 19,960,286,931.60
  5. Step 5: Solve for x
    x = 19,960,286,931.60/199,740.58
  6. Step 6: Final answer
    x = 99,931.06

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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.