Home / 89,218.64-133,844.36-72,725.01

Finding the Fourth Proportional to 89,218.64, 133,844.36 and 72,725.01

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Solution

The fourth proportional to 89,218.64, 133,844.36 and 72,725.01 is: 109,100.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,218.64 : 133,844.36 = 72,725.01 : x
  2. Step 2: Convert to fraction form
    89,218.64/133,844.36 = 72,725.01/x
  3. Step 3: Cross multiply
    89,218.64x = 133,844.36 × 72,725.01
  4. Step 4: Simplify right side
    89,218.64x = 9,733,832,055.82
  5. Step 5: Solve for x
    x = 9,733,832,055.82/89,218.64
  6. Step 6: Final answer
    x = 109,100.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.