Home / 103,054.12-142,207.86-57,110.68

Finding the Fourth Proportional to 103,054.12, 142,207.86 and 57,110.68

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Solution

The fourth proportional to 103,054.12, 142,207.86 and 57,110.68 is: 78,808.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,054.12 : 142,207.86 = 57,110.68 : x
  2. Step 2: Convert to fraction form
    103,054.12/142,207.86 = 57,110.68/x
  3. Step 3: Cross multiply
    103,054.12x = 142,207.86 × 57,110.68
  4. Step 4: Simplify right side
    103,054.12x = 8,121,587,585.94
  5. Step 5: Solve for x
    x = 8,121,587,585.94/103,054.12
  6. Step 6: Final answer
    x = 78,808.96

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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.