Home / 156,739.70-235,239.15-72,629.30

Finding the Fourth Proportional to 156,739.70, 235,239.15 and 72,629.30

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Solution

The fourth proportional to 156,739.70, 235,239.15 and 72,629.30 is: 109,004.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,739.70 : 235,239.15 = 72,629.30 : x
  2. Step 2: Convert to fraction form
    156,739.70/235,239.15 = 72,629.30/x
  3. Step 3: Cross multiply
    156,739.70x = 235,239.15 × 72,629.30
  4. Step 4: Simplify right side
    156,739.70x = 17,085,254,797.10
  5. Step 5: Solve for x
    x = 17,085,254,797.10/156,739.70
  6. Step 6: Final answer
    x = 109,004.00

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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.