Home / 156,038.68-215,333.28-84,418.72

Finding the Fourth Proportional to 156,038.68, 215,333.28 and 84,418.72

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Solution

The fourth proportional to 156,038.68, 215,333.28 and 84,418.72 is: 116,497.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,038.68 : 215,333.28 = 84,418.72 : x
  2. Step 2: Convert to fraction form
    156,038.68/215,333.28 = 84,418.72/x
  3. Step 3: Cross multiply
    156,038.68x = 215,333.28 × 84,418.72
  4. Step 4: Simplify right side
    156,038.68x = 18,178,159,871.00
  5. Step 5: Solve for x
    x = 18,178,159,871.00/156,038.68
  6. Step 6: Final answer
    x = 116,497.78

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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.