Home / 156,289.16-215,678.34-84,669.36

Finding the Fourth Proportional to 156,289.16, 215,678.34 and 84,669.36

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Solution

The fourth proportional to 156,289.16, 215,678.34 and 84,669.36 is: 116,843.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,289.16 : 215,678.34 = 84,669.36 : x
  2. Step 2: Convert to fraction form
    156,289.16/215,678.34 = 84,669.36/x
  3. Step 3: Cross multiply
    156,289.16x = 215,678.34 × 84,669.36
  4. Step 4: Simplify right side
    156,289.16x = 18,261,347,013.66
  5. Step 5: Solve for x
    x = 18,261,347,013.66/156,289.16
  6. Step 6: Final answer
    x = 116,843.34

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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.