Home / 115,101.39-158,918.22-72,098.64

Finding the Fourth Proportional to 115,101.39, 158,918.22 and 72,098.64

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Solution

The fourth proportional to 115,101.39, 158,918.22 and 72,098.64 is: 99,545.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,101.39 : 158,918.22 = 72,098.64 : x
  2. Step 2: Convert to fraction form
    115,101.39/158,918.22 = 72,098.64/x
  3. Step 3: Cross multiply
    115,101.39x = 158,918.22 × 72,098.64
  4. Step 4: Simplify right side
    115,101.39x = 11,457,787,533.22
  5. Step 5: Solve for x
    x = 11,457,787,533.22/115,101.39
  6. Step 6: Final answer
    x = 99,545.17

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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.