Home / 131,648.28-181,673.78-71,218.68

Finding the Fourth Proportional to 131,648.28, 181,673.78 and 71,218.68

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Solution

The fourth proportional to 131,648.28, 181,673.78 and 71,218.68 is: 98,281.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,648.28 : 181,673.78 = 71,218.68 : x
  2. Step 2: Convert to fraction form
    131,648.28/181,673.78 = 71,218.68/x
  3. Step 3: Cross multiply
    131,648.28x = 181,673.78 × 71,218.68
  4. Step 4: Simplify right side
    131,648.28x = 12,938,566,802.21
  5. Step 5: Solve for x
    x = 12,938,566,802.21/131,648.28
  6. Step 6: Final answer
    x = 98,281.32

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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.