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Finding the Fourth Proportional to 128,615.83, 177,333.01 and 94,520.50

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Solution

The fourth proportional to 128,615.83, 177,333.01 and 94,520.50 is: 130,323.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,615.83 : 177,333.01 = 94,520.50 : x
  2. Step 2: Convert to fraction form
    128,615.83/177,333.01 = 94,520.50/x
  3. Step 3: Cross multiply
    128,615.83x = 177,333.01 × 94,520.50
  4. Step 4: Simplify right side
    128,615.83x = 16,761,604,771.71
  5. Step 5: Solve for x
    x = 16,761,604,771.71/128,615.83
  6. Step 6: Final answer
    x = 130,323.03

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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.