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Finding the Fourth Proportional to 103,959.69, 143,464.46 and 56,213.07

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Solution

The fourth proportional to 103,959.69, 143,464.46 and 56,213.07 is: 77,574.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,959.69 : 143,464.46 = 56,213.07 : x
  2. Step 2: Convert to fraction form
    103,959.69/143,464.46 = 56,213.07/x
  3. Step 3: Cross multiply
    103,959.69x = 143,464.46 × 56,213.07
  4. Step 4: Simplify right side
    103,959.69x = 8,064,577,451.43
  5. Step 5: Solve for x
    x = 8,064,577,451.43/103,959.69
  6. Step 6: Final answer
    x = 77,574.08

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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.