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Finding the Fourth Proportional to 146,752.60, 220,128.90 and 76,615.60

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Solution

The fourth proportional to 146,752.60, 220,128.90 and 76,615.60 is: 114,923.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,752.60 : 220,128.90 = 76,615.60 : x
  2. Step 2: Convert to fraction form
    146,752.60/220,128.90 = 76,615.60/x
  3. Step 3: Cross multiply
    146,752.60x = 220,128.90 × 76,615.60
  4. Step 4: Simplify right side
    146,752.60x = 16,865,307,750.84
  5. Step 5: Solve for x
    x = 16,865,307,750.84/146,752.60
  6. Step 6: Final answer
    x = 114,923.40

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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.