Home / 161,984.46-243,045.81-78,856.14

Finding the Fourth Proportional to 161,984.46, 243,045.81 and 78,856.14

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Solution

The fourth proportional to 161,984.46, 243,045.81 and 78,856.14 is: 118,317.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,984.46 : 243,045.81 = 78,856.14 : x
  2. Step 2: Convert to fraction form
    161,984.46/243,045.81 = 78,856.14/x
  3. Step 3: Cross multiply
    161,984.46x = 243,045.81 × 78,856.14
  4. Step 4: Simplify right side
    161,984.46x = 19,165,654,419.77
  5. Step 5: Solve for x
    x = 19,165,654,419.77/161,984.46
  6. Step 6: Final answer
    x = 118,317.86

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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.