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Finding the Fourth Proportional to 104,676, 156,800.16 and 87,089.28

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Solution

The fourth proportional to 104,676, 156,800.16 and 87,089.28 is: 130,456.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,676 : 156,800.16 = 87,089.28 : x
  2. Step 2: Convert to fraction form
    104,676/156,800.16 = 87,089.28/x
  3. Step 3: Cross multiply
    104,676x = 156,800.16 × 87,089.28
  4. Step 4: Simplify right side
    104,676x = 13,655,613,038.28
  5. Step 5: Solve for x
    x = 13,655,613,038.28/104,676
  6. Step 6: Final answer
    x = 130,456.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.