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Finding the Fourth Proportional to 171,662,905.40, 257,494,358.10 and 99,103,494.20

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Solution

The fourth proportional to 171,662,905.40, 257,494,358.10 and 99,103,494.20 is: 148,655,241.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,662,905.40 : 257,494,358.10 = 99,103,494.20 : x
  2. Step 2: Convert to fraction form
    171,662,905.40/257,494,358.10 = 99,103,494.20/x
  3. Step 3: Cross multiply
    171,662,905.40x = 257,494,358.10 × 99,103,494.20
  4. Step 4: Simplify right side
    171,662,905.40x = 25,518,590,624,496,072
  5. Step 5: Solve for x
    x = 25,518,590,624,496,072/171,662,905.40
  6. Step 6: Final answer
    x = 148,655,241.30

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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.