Home / 140,788.08-194,285.57-77,126.31

Finding the Fourth Proportional to 140,788.08, 194,285.57 and 77,126.31

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Solution

The fourth proportional to 140,788.08, 194,285.57 and 77,126.31 is: 106,433.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,788.08 : 194,285.57 = 77,126.31 : x
  2. Step 2: Convert to fraction form
    140,788.08/194,285.57 = 77,126.31/x
  3. Step 3: Cross multiply
    140,788.08x = 194,285.57 × 77,126.31
  4. Step 4: Simplify right side
    140,788.08x = 14,984,528,714.72
  5. Step 5: Solve for x
    x = 14,984,528,714.72/140,788.08
  6. Step 6: Final answer
    x = 106,433.22

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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.