Home / 99,139.94-136,812.17-53,816.95

Finding the Fourth Proportional to 99,139.94, 136,812.17 and 53,816.95

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Solution

The fourth proportional to 99,139.94, 136,812.17 and 53,816.95 is: 74,266.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,139.94 : 136,812.17 = 53,816.95 : x
  2. Step 2: Convert to fraction form
    99,139.94/136,812.17 = 53,816.95/x
  3. Step 3: Cross multiply
    99,139.94x = 136,812.17 × 53,816.95
  4. Step 4: Simplify right side
    99,139.94x = 7,362,812,759.14
  5. Step 5: Solve for x
    x = 7,362,812,759.14/99,139.94
  6. Step 6: Final answer
    x = 74,266.87

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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.