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Finding the Fourth Proportional to 239,670.89, 359,506.34 and 81,900.71

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Solution

The fourth proportional to 239,670.89, 359,506.34 and 81,900.71 is: 122,851.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,670.89 : 359,506.34 = 81,900.71 : x
  2. Step 2: Convert to fraction form
    239,670.89/359,506.34 = 81,900.71/x
  3. Step 3: Cross multiply
    239,670.89x = 359,506.34 × 81,900.71
  4. Step 4: Simplify right side
    239,670.89x = 29,443,824,495.50
  5. Step 5: Solve for x
    x = 29,443,824,495.50/239,670.89
  6. Step 6: Final answer
    x = 122,851.07

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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.