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Finding the Fourth Proportional to 162,483.84, 243,781.08 and 87,611.16

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Solution

The fourth proportional to 162,483.84, 243,781.08 and 87,611.16 is: 131,446.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,483.84 : 243,781.08 = 87,611.16 : x
  2. Step 2: Convert to fraction form
    162,483.84/243,781.08 = 87,611.16/x
  3. Step 3: Cross multiply
    162,483.84x = 243,781.08 × 87,611.16
  4. Step 4: Simplify right side
    162,483.84x = 21,357,943,204.85
  5. Step 5: Solve for x
    x = 21,357,943,204.85/162,483.84
  6. Step 6: Final answer
    x = 131,446.57

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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.