Home / 156,739.56-216,366.78-105,821.25

Finding the Fourth Proportional to 156,739.56, 216,366.78 and 105,821.25

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Solution

The fourth proportional to 156,739.56, 216,366.78 and 105,821.25 is: 146,078.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,739.56 : 216,366.78 = 105,821.25 : x
  2. Step 2: Convert to fraction form
    156,739.56/216,366.78 = 105,821.25/x
  3. Step 3: Cross multiply
    156,739.56x = 216,366.78 × 105,821.25
  4. Step 4: Simplify right side
    156,739.56x = 22,896,203,118.08
  5. Step 5: Solve for x
    x = 22,896,203,118.08/156,739.56
  6. Step 6: Final answer
    x = 146,078.01

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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.