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Finding the Fourth Proportional to 157,811.80, 236,717.70 and 98,762.80

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Solution

The fourth proportional to 157,811.80, 236,717.70 and 98,762.80 is: 148,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,811.80 : 236,717.70 = 98,762.80 : x
  2. Step 2: Convert to fraction form
    157,811.80/236,717.70 = 98,762.80/x
  3. Step 3: Cross multiply
    157,811.80x = 236,717.70 × 98,762.80
  4. Step 4: Simplify right side
    157,811.80x = 23,378,902,861.56
  5. Step 5: Solve for x
    x = 23,378,902,861.56/157,811.80
  6. Step 6: Final answer
    x = 148,144.20

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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.