Home / 140,803.31-194,313.13-77,145.21

Finding the Fourth Proportional to 140,803.31, 194,313.13 and 77,145.21

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Solution

The fourth proportional to 140,803.31, 194,313.13 and 77,145.21 is: 106,462.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,803.31 : 194,313.13 = 77,145.21 : x
  2. Step 2: Convert to fraction form
    140,803.31/194,313.13 = 77,145.21/x
  3. Step 3: Cross multiply
    140,803.31x = 194,313.13 × 77,145.21
  4. Step 4: Simplify right side
    140,803.31x = 14,990,327,026.74
  5. Step 5: Solve for x
    x = 14,990,327,026.74/140,803.31
  6. Step 6: Final answer
    x = 106,462.89

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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.