Home / 86,119.34-118,864.68-54,331.70

Finding the Fourth Proportional to 86,119.34, 118,864.68 and 54,331.70

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Solution

The fourth proportional to 86,119.34, 118,864.68 and 54,331.70 is: 74,990.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,119.34 : 118,864.68 = 54,331.70 : x
  2. Step 2: Convert to fraction form
    86,119.34/118,864.68 = 54,331.70/x
  3. Step 3: Cross multiply
    86,119.34x = 118,864.68 × 54,331.70
  4. Step 4: Simplify right side
    86,119.34x = 6,458,120,134.36
  5. Step 5: Solve for x
    x = 6,458,120,134.36/86,119.34
  6. Step 6: Final answer
    x = 74,990.36

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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.