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Finding the Fourth Proportional to 104,680, 156,806.16 and 87,093.28

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Solution

The fourth proportional to 104,680, 156,806.16 and 87,093.28 is: 130,462.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,680 : 156,806.16 = 87,093.28 : x
  2. Step 2: Convert to fraction form
    104,680/156,806.16 = 87,093.28/x
  3. Step 3: Cross multiply
    104,680x = 156,806.16 × 87,093.28
  4. Step 4: Simplify right side
    104,680x = 13,656,762,798.60
  5. Step 5: Solve for x
    x = 13,656,762,798.60/104,680
  6. Step 6: Final answer
    x = 130,462.01

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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.