Home / 141,129.40-194,760.78-77,473

Finding the Fourth Proportional to 141,129.40, 194,760.78 and 77,473

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Solution

The fourth proportional to 141,129.40, 194,760.78 and 77,473 is: 106,913.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,129.40 : 194,760.78 = 77,473 : x
  2. Step 2: Convert to fraction form
    141,129.40/194,760.78 = 77,473/x
  3. Step 3: Cross multiply
    141,129.40x = 194,760.78 × 77,473
  4. Step 4: Simplify right side
    141,129.40x = 15,088,701,908.94
  5. Step 5: Solve for x
    x = 15,088,701,908.94/141,129.40
  6. Step 6: Final answer
    x = 106,913.95

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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.