Home / 189,321.18-261,216.63-115,714.98

Finding the Fourth Proportional to 189,321.18, 261,216.63 and 115,714.98

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Solution

The fourth proportional to 189,321.18, 261,216.63 and 115,714.98 is: 159,658.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,321.18 : 261,216.63 = 115,714.98 : x
  2. Step 2: Convert to fraction form
    189,321.18/261,216.63 = 115,714.98/x
  3. Step 3: Cross multiply
    189,321.18x = 261,216.63 × 115,714.98
  4. Step 4: Simplify right side
    189,321.18x = 30,226,677,116.12
  5. Step 5: Solve for x
    x = 30,226,677,116.12/189,321.18
  6. Step 6: Final answer
    x = 159,658.19

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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.