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Finding the Fourth Proportional to 162,544.32, 243,816.48 and 79,380

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Solution

The fourth proportional to 162,544.32, 243,816.48 and 79,380 is: 119,070

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,544.32 : 243,816.48 = 79,380 : x
  2. Step 2: Convert to fraction form
    162,544.32/243,816.48 = 79,380/x
  3. Step 3: Cross multiply
    162,544.32x = 243,816.48 × 79,380
  4. Step 4: Simplify right side
    162,544.32x = 19,354,152,182.40
  5. Step 5: Solve for x
    x = 19,354,152,182.40/162,544.32
  6. Step 6: Final answer
    x = 119,070

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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.