Home / 138,218.86-207,329.46-38,386.84

Finding the Fourth Proportional to 138,218.86, 207,329.46 and 38,386.84

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Solution

The fourth proportional to 138,218.86, 207,329.46 and 38,386.84 is: 57,580.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,218.86 : 207,329.46 = 38,386.84 : x
  2. Step 2: Convert to fraction form
    138,218.86/207,329.46 = 38,386.84/x
  3. Step 3: Cross multiply
    138,218.86x = 207,329.46 × 38,386.84
  4. Step 4: Simplify right side
    138,218.86x = 7,958,722,808.31
  5. Step 5: Solve for x
    x = 7,958,722,808.31/138,218.86
  6. Step 6: Final answer
    x = 57,580.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.