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Finding the Fourth Proportional to 162,161.40, 243,180.12 and 77,898.12

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Solution

The fourth proportional to 162,161.40, 243,180.12 and 77,898.12 is: 116,817.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,161.40 : 243,180.12 = 77,898.12 : x
  2. Step 2: Convert to fraction form
    162,161.40/243,180.12 = 77,898.12/x
  3. Step 3: Cross multiply
    162,161.40x = 243,180.12 × 77,898.12
  4. Step 4: Simplify right side
    162,161.40x = 18,943,274,169.37
  5. Step 5: Solve for x
    x = 18,943,274,169.37/162,161.40
  6. Step 6: Final answer
    x = 116,817.41

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1.5x scale

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.