Home / 156,161.40-215,502.64-84,541.36

Finding the Fourth Proportional to 156,161.40, 215,502.64 and 84,541.36

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Solution

The fourth proportional to 156,161.40, 215,502.64 and 84,541.36 is: 116,667.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,161.40 : 215,502.64 = 84,541.36 : x
  2. Step 2: Convert to fraction form
    156,161.40/215,502.64 = 84,541.36/x
  3. Step 3: Cross multiply
    156,161.40x = 215,502.64 × 84,541.36
  4. Step 4: Simplify right side
    156,161.40x = 18,218,886,269.19
  5. Step 5: Solve for x
    x = 18,218,886,269.19/156,161.40
  6. Step 6: Final answer
    x = 116,667.03

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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.