Home / 156,364.23-215,776.83-84,742.72

Finding the Fourth Proportional to 156,364.23, 215,776.83 and 84,742.72

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Solution

The fourth proportional to 156,364.23, 215,776.83 and 84,742.72 is: 116,941.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,364.23 : 215,776.83 = 84,742.72 : x
  2. Step 2: Convert to fraction form
    156,364.23/215,776.83 = 84,742.72/x
  3. Step 3: Cross multiply
    156,364.23x = 215,776.83 × 84,742.72
  4. Step 4: Simplify right side
    156,364.23x = 18,285,514,947.74
  5. Step 5: Solve for x
    x = 18,285,514,947.74/156,364.23
  6. Step 6: Final answer
    x = 116,941.80

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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.