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Finding the Fourth Proportional to 101,507.16, 140,076.84 and 56,187

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Solution

The fourth proportional to 101,507.16, 140,076.84 and 56,187 is: 77,536.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,507.16 : 140,076.84 = 56,187 : x
  2. Step 2: Convert to fraction form
    101,507.16/140,076.84 = 56,187/x
  3. Step 3: Cross multiply
    101,507.16x = 140,076.84 × 56,187
  4. Step 4: Simplify right side
    101,507.16x = 7,870,497,409.08
  5. Step 5: Solve for x
    x = 7,870,497,409.08/101,507.16
  6. Step 6: Final answer
    x = 77,536.38

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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.