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Finding the Fourth Proportional to 99,251.96, 136,984.03 and 72,483.08

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Solution

The fourth proportional to 99,251.96, 136,984.03 and 72,483.08 is: 100,038.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,251.96 : 136,984.03 = 72,483.08 : x
  2. Step 2: Convert to fraction form
    99,251.96/136,984.03 = 72,483.08/x
  3. Step 3: Cross multiply
    99,251.96x = 136,984.03 × 72,483.08
  4. Step 4: Simplify right side
    99,251.96x = 9,929,023,539.08
  5. Step 5: Solve for x
    x = 9,929,023,539.08/99,251.96
  6. Step 6: Final answer
    x = 100,038.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.