Home / 156,986.10-235,479.15-90,555.98

Finding the Fourth Proportional to 156,986.10, 235,479.15 and 90,555.98

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Solution

The fourth proportional to 156,986.10, 235,479.15 and 90,555.98 is: 135,833.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,986.10 : 235,479.15 = 90,555.98 : x
  2. Step 2: Convert to fraction form
    156,986.10/235,479.15 = 90,555.98/x
  3. Step 3: Cross multiply
    156,986.10x = 235,479.15 × 90,555.98
  4. Step 4: Simplify right side
    156,986.10x = 21,324,044,020.42
  5. Step 5: Solve for x
    x = 21,324,044,020.42/156,986.10
  6. Step 6: Final answer
    x = 135,833.96

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1.5x scale

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.