Home / 156,739.83-216,367.15-105,821.51

Finding the Fourth Proportional to 156,739.83, 216,367.15 and 105,821.51

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Solution

The fourth proportional to 156,739.83, 216,367.15 and 105,821.51 is: 146,078.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,739.83 : 216,367.15 = 105,821.51 : x
  2. Step 2: Convert to fraction form
    156,739.83/216,367.15 = 105,821.51/x
  3. Step 3: Cross multiply
    156,739.83x = 216,367.15 × 105,821.51
  4. Step 4: Simplify right side
    156,739.83x = 22,896,297,379.42
  5. Step 5: Solve for x
    x = 22,896,297,379.42/156,739.83
  6. Step 6: Final answer
    x = 146,078.36

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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.