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Finding the Fourth Proportional to 161,980.60, 243,080.40 and 56,800.48

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Solution

The fourth proportional to 161,980.60, 243,080.40 and 56,800.48 is: 85,239.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,980.60 : 243,080.40 = 56,800.48 : x
  2. Step 2: Convert to fraction form
    161,980.60/243,080.40 = 56,800.48/x
  3. Step 3: Cross multiply
    161,980.60x = 243,080.40 × 56,800.48
  4. Step 4: Simplify right side
    161,980.60x = 13,807,083,398.59
  5. Step 5: Solve for x
    x = 13,807,083,398.59/161,980.60
  6. Step 6: Final answer
    x = 85,239.12

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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.