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Finding the Fourth Proportional to 104,271.30, 156,698.55 and 91,440.90

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Solution

The fourth proportional to 104,271.30, 156,698.55 and 91,440.90 is: 137,417.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,271.30 : 156,698.55 = 91,440.90 : x
  2. Step 2: Convert to fraction form
    104,271.30/156,698.55 = 91,440.90/x
  3. Step 3: Cross multiply
    104,271.30x = 156,698.55 × 91,440.90
  4. Step 4: Simplify right side
    104,271.30x = 14,328,656,440.70
  5. Step 5: Solve for x
    x = 14,328,656,440.70/104,271.30
  6. Step 6: Final answer
    x = 137,417.07

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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.