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Finding the Fourth Proportional to 156,321.93, 215,724.45 and 84,701.93

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Solution

The fourth proportional to 156,321.93, 215,724.45 and 84,701.93 is: 116,888.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,321.93 : 215,724.45 = 84,701.93 : x
  2. Step 2: Convert to fraction form
    156,321.93/215,724.45 = 84,701.93/x
  3. Step 3: Cross multiply
    156,321.93x = 215,724.45 × 84,701.93
  4. Step 4: Simplify right side
    156,321.93x = 18,272,276,723.88
  5. Step 5: Solve for x
    x = 18,272,276,723.88/156,321.93
  6. Step 6: Final answer
    x = 116,888.76

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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.