Home / 98,434.88-135,838.24-53,723.20

Finding the Fourth Proportional to 98,434.88, 135,838.24 and 53,723.20

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Solution

The fourth proportional to 98,434.88, 135,838.24 and 53,723.20 is: 74,136.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,434.88 : 135,838.24 = 53,723.20 : x
  2. Step 2: Convert to fraction form
    98,434.88/135,838.24 = 53,723.20/x
  3. Step 3: Cross multiply
    98,434.88x = 135,838.24 × 53,723.20
  4. Step 4: Simplify right side
    98,434.88x = 7,297,664,935.17
  5. Step 5: Solve for x
    x = 7,297,664,935.17/98,434.88
  6. Step 6: Final answer
    x = 74,136.98

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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.