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Finding the Fourth Proportional to 103,959.44, 143,463.78 and 56,212.64

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Solution

The fourth proportional to 103,959.44, 143,463.78 and 56,212.64 is: 77,573.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,959.44 : 143,463.78 = 56,212.64 : x
  2. Step 2: Convert to fraction form
    103,959.44/143,463.78 = 56,212.64/x
  3. Step 3: Cross multiply
    103,959.44x = 143,463.78 × 56,212.64
  4. Step 4: Simplify right side
    103,959.44x = 8,064,477,818.18
  5. Step 5: Solve for x
    x = 8,064,477,818.18/103,959.44
  6. Step 6: Final answer
    x = 77,573.31

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1.5x scale

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.