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Finding the Fourth Proportional to 161,703,729.20, 242,555,593.80 and 64,705,905.20

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Solution

The fourth proportional to 161,703,729.20, 242,555,593.80 and 64,705,905.20 is: 97,058,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,703,729.20 : 242,555,593.80 = 64,705,905.20 : x
  2. Step 2: Convert to fraction form
    161,703,729.20/242,555,593.80 = 64,705,905.20/x
  3. Step 3: Cross multiply
    161,703,729.20x = 242,555,593.80 × 64,705,905.20
  4. Step 4: Simplify right side
    161,703,729.20x = 15,694,779,258,152,510
  5. Step 5: Solve for x
    x = 15,694,779,258,152,510/161,703,729.20
  6. Step 6: Final answer
    x = 97,058,857.80

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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.