Home / 156,310.48-215,708.15-84,690.79

Finding the Fourth Proportional to 156,310.48, 215,708.15 and 84,690.79

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Solution

The fourth proportional to 156,310.48, 215,708.15 and 84,690.79 is: 116,873.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,310.48 : 215,708.15 = 84,690.79 : x
  2. Step 2: Convert to fraction form
    156,310.48/215,708.15 = 84,690.79/x
  3. Step 3: Cross multiply
    156,310.48x = 215,708.15 × 84,690.79
  4. Step 4: Simplify right side
    156,310.48x = 18,268,492,130.94
  5. Step 5: Solve for x
    x = 18,268,492,130.94/156,310.48
  6. Step 6: Final answer
    x = 116,873.11

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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.