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Finding the Fourth Proportional to 99,135.50, 136,803.29 and 53,812.52

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Solution

The fourth proportional to 99,135.50, 136,803.29 and 53,812.52 is: 74,259.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,135.50 : 136,803.29 = 53,812.52 : x
  2. Step 2: Convert to fraction form
    99,135.50/136,803.29 = 53,812.52/x
  3. Step 3: Cross multiply
    99,135.50x = 136,803.29 × 53,812.52
  4. Step 4: Simplify right side
    99,135.50x = 7,361,728,826.11
  5. Step 5: Solve for x
    x = 7,361,728,826.11/99,135.50
  6. Step 6: Final answer
    x = 74,259.26

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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.