Home / 156,900.06-216,523.41-85,280.07

Finding the Fourth Proportional to 156,900.06, 216,523.41 and 85,280.07

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Solution

The fourth proportional to 156,900.06, 216,523.41 and 85,280.07 is: 117,687.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,900.06 : 216,523.41 = 85,280.07 : x
  2. Step 2: Convert to fraction form
    156,900.06/216,523.41 = 85,280.07/x
  3. Step 3: Cross multiply
    156,900.06x = 216,523.41 × 85,280.07
  4. Step 4: Simplify right side
    156,900.06x = 18,465,131,561.44
  5. Step 5: Solve for x
    x = 18,465,131,561.44/156,900.06
  6. Step 6: Final answer
    x = 117,687.22

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1.5x scale

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.