Home / 231,971.81-320,143.50-130,014.45

Finding the Fourth Proportional to 231,971.81, 320,143.50 and 130,014.45

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Solution

The fourth proportional to 231,971.81, 320,143.50 and 130,014.45 is: 179,432.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,971.81 : 320,143.50 = 130,014.45 : x
  2. Step 2: Convert to fraction form
    231,971.81/320,143.50 = 130,014.45/x
  3. Step 3: Cross multiply
    231,971.81x = 320,143.50 × 130,014.45
  4. Step 4: Simplify right side
    231,971.81x = 41,623,281,073.58
  5. Step 5: Solve for x
    x = 41,623,281,073.58/231,971.81
  6. Step 6: Final answer
    x = 179,432.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.