Home / 210,905.36-316,431.87-61,154.64

Finding the Fourth Proportional to 210,905.36, 316,431.87 and 61,154.64

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Solution

The fourth proportional to 210,905.36, 316,431.87 and 61,154.64 is: 91,753.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,905.36 : 316,431.87 = 61,154.64 : x
  2. Step 2: Convert to fraction form
    210,905.36/316,431.87 = 61,154.64/x
  3. Step 3: Cross multiply
    210,905.36x = 316,431.87 × 61,154.64
  4. Step 4: Simplify right side
    210,905.36x = 19,351,276,865.05
  5. Step 5: Solve for x
    x = 19,351,276,865.05/210,905.36
  6. Step 6: Final answer
    x = 91,753.36

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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.