Home / 162,142.75-243,152.16-77,878.86

Finding the Fourth Proportional to 162,142.75, 243,152.16 and 77,878.86

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Solution

The fourth proportional to 162,142.75, 243,152.16 and 77,878.86 is: 116,788.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,142.75 : 243,152.16 = 77,878.86 : x
  2. Step 2: Convert to fraction form
    162,142.75/243,152.16 = 77,878.86/x
  3. Step 3: Cross multiply
    162,142.75x = 243,152.16 × 77,878.86
  4. Step 4: Simplify right side
    162,142.75x = 18,936,413,027.34
  5. Step 5: Solve for x
    x = 18,936,413,027.34/162,142.75
  6. Step 6: Final answer
    x = 116,788.53

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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.