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Finding the Fourth Proportional to 104,630.40, 156,686.40 and 83,894.40

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Solution

The fourth proportional to 104,630.40, 156,686.40 and 83,894.40 is: 125,633.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,630.40 : 156,686.40 = 83,894.40 : x
  2. Step 2: Convert to fraction form
    104,630.40/156,686.40 = 83,894.40/x
  3. Step 3: Cross multiply
    104,630.40x = 156,686.40 × 83,894.40
  4. Step 4: Simplify right side
    104,630.40x = 13,145,111,516.16
  5. Step 5: Solve for x
    x = 13,145,111,516.16/104,630.40
  6. Step 6: Final answer
    x = 125,633.77

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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.