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Finding the Fourth Proportional to 162,401.60, 243,256.80 and 131,297.60

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Solution

The fourth proportional to 162,401.60, 243,256.80 and 131,297.60 is: 196,666.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,401.60 : 243,256.80 = 131,297.60 : x
  2. Step 2: Convert to fraction form
    162,401.60/243,256.80 = 131,297.60/x
  3. Step 3: Cross multiply
    162,401.60x = 243,256.80 × 131,297.60
  4. Step 4: Simplify right side
    162,401.60x = 31,939,034,023.68
  5. Step 5: Solve for x
    x = 31,939,034,023.68/162,401.60
  6. Step 6: Final answer
    x = 196,666.99

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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.