Home / 156,341.22-215,750.34-84,723

Finding the Fourth Proportional to 156,341.22, 215,750.34 and 84,723

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Solution

The fourth proportional to 156,341.22, 215,750.34 and 84,723 is: 116,917.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,341.22 : 215,750.34 = 84,723 : x
  2. Step 2: Convert to fraction form
    156,341.22/215,750.34 = 84,723/x
  3. Step 3: Cross multiply
    156,341.22x = 215,750.34 × 84,723
  4. Step 4: Simplify right side
    156,341.22x = 18,279,016,055.82
  5. Step 5: Solve for x
    x = 18,279,016,055.82/156,341.22
  6. Step 6: Final answer
    x = 116,917.45

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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.