Home / 156,311.79-215,709.98-84,693.75

Finding the Fourth Proportional to 156,311.79, 215,709.98 and 84,693.75

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Solution

The fourth proportional to 156,311.79, 215,709.98 and 84,693.75 is: 116,877.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,311.79 : 215,709.98 = 84,693.75 : x
  2. Step 2: Convert to fraction form
    156,311.79/215,709.98 = 84,693.75/x
  3. Step 3: Cross multiply
    156,311.79x = 215,709.98 × 84,693.75
  4. Step 4: Simplify right side
    156,311.79x = 18,269,286,695.16
  5. Step 5: Solve for x
    x = 18,269,286,695.16/156,311.79
  6. Step 6: Final answer
    x = 116,877.22

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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.