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Finding the Fourth Proportional to 104,021.70, 156,032.55 and 91,968.90

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Solution

The fourth proportional to 104,021.70, 156,032.55 and 91,968.90 is: 137,953.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,021.70 : 156,032.55 = 91,968.90 : x
  2. Step 2: Convert to fraction form
    104,021.70/156,032.55 = 91,968.90/x
  3. Step 3: Cross multiply
    104,021.70x = 156,032.55 × 91,968.90
  4. Step 4: Simplify right side
    104,021.70x = 14,350,141,987.70
  5. Step 5: Solve for x
    x = 14,350,141,987.70/104,021.70
  6. Step 6: Final answer
    x = 137,953.35

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1.5x scale

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.