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Finding the Fourth Proportional to 99,139.44, 136,811.48 and 53,816.45

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Solution

The fourth proportional to 99,139.44, 136,811.48 and 53,816.45 is: 74,266.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,139.44 : 136,811.48 = 53,816.45 : x
  2. Step 2: Convert to fraction form
    99,139.44/136,811.48 = 53,816.45/x
  3. Step 3: Cross multiply
    99,139.44x = 136,811.48 × 53,816.45
  4. Step 4: Simplify right side
    99,139.44x = 7,362,707,219.71
  5. Step 5: Solve for x
    x = 7,362,707,219.71/99,139.44
  6. Step 6: Final answer
    x = 74,266.18

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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.