Home / 100,732.40-138,955.46-62,478.73

Finding the Fourth Proportional to 100,732.40, 138,955.46 and 62,478.73

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Solution

The fourth proportional to 100,732.40, 138,955.46 and 62,478.73 is: 86,186.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,732.40 : 138,955.46 = 62,478.73 : x
  2. Step 2: Convert to fraction form
    100,732.40/138,955.46 = 62,478.73/x
  3. Step 3: Cross multiply
    100,732.40x = 138,955.46 × 62,478.73
  4. Step 4: Simplify right side
    100,732.40x = 8,681,760,667.37
  5. Step 5: Solve for x
    x = 8,681,760,667.37/100,732.40
  6. Step 6: Final answer
    x = 86,186.38

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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.