Home / 156,108.23-215,429-84,488.32

Finding the Fourth Proportional to 156,108.23, 215,429 and 84,488.32

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Solution

The fourth proportional to 156,108.23, 215,429 and 84,488.32 is: 116,593.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,108.23 : 215,429 = 84,488.32 : x
  2. Step 2: Convert to fraction form
    156,108.23/215,429 = 84,488.32/x
  3. Step 3: Cross multiply
    156,108.23x = 215,429 × 84,488.32
  4. Step 4: Simplify right side
    156,108.23x = 18,201,234,289.28
  5. Step 5: Solve for x
    x = 18,201,234,289.28/156,108.23
  6. Step 6: Final answer
    x = 116,593.69

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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.