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Finding the Fourth Proportional to 161,781,617.80, 242,672,426.70 and 116,431,985.80

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Solution

The fourth proportional to 161,781,617.80, 242,672,426.70 and 116,431,985.80 is: 174,647,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,781,617.80 : 242,672,426.70 = 116,431,985.80 : x
  2. Step 2: Convert to fraction form
    161,781,617.80/242,672,426.70 = 116,431,985.80/x
  3. Step 3: Cross multiply
    161,781,617.80x = 242,672,426.70 × 116,431,985.80
  4. Step 4: Simplify right side
    161,781,617.80x = 28,254,832,539,585,940
  5. Step 5: Solve for x
    x = 28,254,832,539,585,940/161,781,617.80
  6. Step 6: Final answer
    x = 174,647,978.70

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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.