Home / 109,715.56-151,406.12-61,318.28

Finding the Fourth Proportional to 109,715.56, 151,406.12 and 61,318.28

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Solution

The fourth proportional to 109,715.56, 151,406.12 and 61,318.28 is: 84,618.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,715.56 : 151,406.12 = 61,318.28 : x
  2. Step 2: Convert to fraction form
    109,715.56/151,406.12 = 61,318.28/x
  3. Step 3: Cross multiply
    109,715.56x = 151,406.12 × 61,318.28
  4. Step 4: Simplify right side
    109,715.56x = 9,283,962,839.17
  5. Step 5: Solve for x
    x = 9,283,962,839.17/109,715.56
  6. Step 6: Final answer
    x = 84,618.47

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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.