Home / 156,862.20-235,422.90-72,751.80

Finding the Fourth Proportional to 156,862.20, 235,422.90 and 72,751.80

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Solution

The fourth proportional to 156,862.20, 235,422.90 and 72,751.80 is: 109,187.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,862.20 : 235,422.90 = 72,751.80 : x
  2. Step 2: Convert to fraction form
    156,862.20/235,422.90 = 72,751.80/x
  3. Step 3: Cross multiply
    156,862.20x = 235,422.90 × 72,751.80
  4. Step 4: Simplify right side
    156,862.20x = 17,127,439,736.22
  5. Step 5: Solve for x
    x = 17,127,439,736.22/156,862.20
  6. Step 6: Final answer
    x = 109,187.81

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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.