Home / 245,421.68-338,673.18-137,997.86

Finding the Fourth Proportional to 245,421.68, 338,673.18 and 137,997.86

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Solution

The fourth proportional to 245,421.68, 338,673.18 and 137,997.86 is: 190,432.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,421.68 : 338,673.18 = 137,997.86 : x
  2. Step 2: Convert to fraction form
    245,421.68/338,673.18 = 137,997.86/x
  3. Step 3: Cross multiply
    245,421.68x = 338,673.18 × 137,997.86
  4. Step 4: Simplify right side
    245,421.68x = 46,736,174,079.39
  5. Step 5: Solve for x
    x = 46,736,174,079.39/245,421.68
  6. Step 6: Final answer
    x = 190,432.13

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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.