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Finding the Fourth Proportional to 99,511.80, 149,349.30 and 98,734.20

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Solution

The fourth proportional to 99,511.80, 149,349.30 and 98,734.20 is: 148,182.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,511.80 : 149,349.30 = 98,734.20 : x
  2. Step 2: Convert to fraction form
    99,511.80/149,349.30 = 98,734.20/x
  3. Step 3: Cross multiply
    99,511.80x = 149,349.30 × 98,734.20
  4. Step 4: Simplify right side
    99,511.80x = 14,745,883,656.06
  5. Step 5: Solve for x
    x = 14,745,883,656.06/99,511.80
  6. Step 6: Final answer
    x = 148,182.26

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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.