Home / 103,918.32-143,407.17-56,171.64

Finding the Fourth Proportional to 103,918.32, 143,407.17 and 56,171.64

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Solution

The fourth proportional to 103,918.32, 143,407.17 and 56,171.64 is: 77,516.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,918.32 : 143,407.17 = 56,171.64 : x
  2. Step 2: Convert to fraction form
    103,918.32/143,407.17 = 56,171.64/x
  3. Step 3: Cross multiply
    103,918.32x = 143,407.17 × 56,171.64
  4. Step 4: Simplify right side
    103,918.32x = 8,055,415,926.66
  5. Step 5: Solve for x
    x = 8,055,415,926.66/103,918.32
  6. Step 6: Final answer
    x = 77,516.80

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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.