Home / 104,619.60-156,777.95-72,128.45

Finding the Fourth Proportional to 104,619.60, 156,777.95 and 72,128.45

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Solution

The fourth proportional to 104,619.60, 156,777.95 and 72,128.45 is: 108,088.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,619.60 : 156,777.95 = 72,128.45 : x
  2. Step 2: Convert to fraction form
    104,619.60/156,777.95 = 72,128.45/x
  3. Step 3: Cross multiply
    104,619.60x = 156,777.95 × 72,128.45
  4. Step 4: Simplify right side
    104,619.60x = 11,308,150,558.98
  5. Step 5: Solve for x
    x = 11,308,150,558.98/104,619.60
  6. Step 6: Final answer
    x = 108,088.26

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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.