Home / 103,959.28-143,463.16-56,212.72

Finding the Fourth Proportional to 103,959.28, 143,463.16 and 56,212.72

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Solution

The fourth proportional to 103,959.28, 143,463.16 and 56,212.72 is: 77,573.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,959.28 : 143,463.16 = 56,212.72 : x
  2. Step 2: Convert to fraction form
    103,959.28/143,463.16 = 56,212.72/x
  3. Step 3: Cross multiply
    103,959.28x = 143,463.16 × 56,212.72
  4. Step 4: Simplify right side
    103,959.28x = 8,064,454,443.40
  5. Step 5: Solve for x
    x = 8,064,454,443.40/103,959.28
  6. Step 6: Final answer
    x = 77,573.20

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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.