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Finding the Fourth Proportional to 134,599.50, 185,747.31 and 78,043.68

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Solution

The fourth proportional to 134,599.50, 185,747.31 and 78,043.68 is: 107,700.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,599.50 : 185,747.31 = 78,043.68 : x
  2. Step 2: Convert to fraction form
    134,599.50/185,747.31 = 78,043.68/x
  3. Step 3: Cross multiply
    134,599.50x = 185,747.31 × 78,043.68
  4. Step 4: Simplify right side
    134,599.50x = 14,496,403,622.50
  5. Step 5: Solve for x
    x = 14,496,403,622.50/134,599.50
  6. Step 6: Final answer
    x = 107,700.28

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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.