Home / 156,155.43-215,495.18-84,535.45

Finding the Fourth Proportional to 156,155.43, 215,495.18 and 84,535.45

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Solution

The fourth proportional to 156,155.43, 215,495.18 and 84,535.45 is: 116,659.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,155.43 : 215,495.18 = 84,535.45 : x
  2. Step 2: Convert to fraction form
    156,155.43/215,495.18 = 84,535.45/x
  3. Step 3: Cross multiply
    156,155.43x = 215,495.18 × 84,535.45
  4. Step 4: Simplify right side
    156,155.43x = 18,216,982,014.13
  5. Step 5: Solve for x
    x = 18,216,982,014.13/156,155.43
  6. Step 6: Final answer
    x = 116,659.29

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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.