Home / 103,929.28-143,422.35-56,182.71

Finding the Fourth Proportional to 103,929.28, 143,422.35 and 56,182.71

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Solution

The fourth proportional to 103,929.28, 143,422.35 and 56,182.71 is: 77,532.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,929.28 : 143,422.35 = 56,182.71 : x
  2. Step 2: Convert to fraction form
    103,929.28/143,422.35 = 56,182.71/x
  3. Step 3: Cross multiply
    103,929.28x = 143,422.35 × 56,182.71
  4. Step 4: Simplify right side
    103,929.28x = 8,057,856,624.72
  5. Step 5: Solve for x
    x = 8,057,856,624.72/103,929.28
  6. Step 6: Final answer
    x = 77,532.11

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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.