Home / 161,968.84-243,023.40-87,001.48

Finding the Fourth Proportional to 161,968.84, 243,023.40 and 87,001.48

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Solution

The fourth proportional to 161,968.84, 243,023.40 and 87,001.48 is: 130,539.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,968.84 : 243,023.40 = 87,001.48 : x
  2. Step 2: Convert to fraction form
    161,968.84/243,023.40 = 87,001.48/x
  3. Step 3: Cross multiply
    161,968.84x = 243,023.40 × 87,001.48
  4. Step 4: Simplify right side
    161,968.84x = 21,143,395,474.63
  5. Step 5: Solve for x
    x = 21,143,395,474.63/161,968.84
  6. Step 6: Final answer
    x = 130,539.90

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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.