Home / 156,128.04-215,456.31-84,507.48

Finding the Fourth Proportional to 156,128.04, 215,456.31 and 84,507.48

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Solution

The fourth proportional to 156,128.04, 215,456.31 and 84,507.48 is: 116,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,128.04 : 215,456.31 = 84,507.48 : x
  2. Step 2: Convert to fraction form
    156,128.04/215,456.31 = 84,507.48/x
  3. Step 3: Cross multiply
    156,128.04x = 215,456.31 × 84,507.48
  4. Step 4: Simplify right side
    156,128.04x = 18,207,669,808.20
  5. Step 5: Solve for x
    x = 18,207,669,808.20/156,128.04
  6. Step 6: Final answer
    x = 116,620.11

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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.