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Finding the Fourth Proportional to 99,999.63, 149,117.31 and 99,099.54

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Solution

The fourth proportional to 99,999.63, 149,117.31 and 99,099.54 is: 147,775.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,999.63 : 149,117.31 = 99,099.54 : x
  2. Step 2: Convert to fraction form
    99,999.63/149,117.31 = 99,099.54/x
  3. Step 3: Cross multiply
    99,999.63x = 149,117.31 × 99,099.54
  4. Step 4: Simplify right side
    99,999.63x = 14,777,456,827.04
  5. Step 5: Solve for x
    x = 14,777,456,827.04/99,999.63
  6. Step 6: Final answer
    x = 147,775.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.