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Finding the Fourth Proportional to 101,123.64, 139,550.60 and 56,411.64

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Solution

The fourth proportional to 101,123.64, 139,550.60 and 56,411.64 is: 77,848.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,123.64 : 139,550.60 = 56,411.64 : x
  2. Step 2: Convert to fraction form
    101,123.64/139,550.60 = 56,411.64/x
  3. Step 3: Cross multiply
    101,123.64x = 139,550.60 × 56,411.64
  4. Step 4: Simplify right side
    101,123.64x = 7,872,278,208.98
  5. Step 5: Solve for x
    x = 7,872,278,208.98/101,123.64
  6. Step 6: Final answer
    x = 77,848.05

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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.