Home / 78,750.08-107,805.66-78,187.26

Finding the Fourth Proportional to 78,750.08, 107,805.66 and 78,187.26

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Solution

The fourth proportional to 78,750.08, 107,805.66 and 78,187.26 is: 107,035.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,750.08 : 107,805.66 = 78,187.26 : x
  2. Step 2: Convert to fraction form
    78,750.08/107,805.66 = 78,187.26/x
  3. Step 3: Cross multiply
    78,750.08x = 107,805.66 × 78,187.26
  4. Step 4: Simplify right side
    78,750.08x = 8,429,029,167.89
  5. Step 5: Solve for x
    x = 8,429,029,167.89/78,750.08
  6. Step 6: Final answer
    x = 107,035.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.