Home / 136,419.81-188,259.34-79,831.19

Finding the Fourth Proportional to 136,419.81, 188,259.34 and 79,831.19

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Solution

The fourth proportional to 136,419.81, 188,259.34 and 79,831.19 is: 110,167.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,419.81 : 188,259.34 = 79,831.19 : x
  2. Step 2: Convert to fraction form
    136,419.81/188,259.34 = 79,831.19/x
  3. Step 3: Cross multiply
    136,419.81x = 188,259.34 × 79,831.19
  4. Step 4: Simplify right side
    136,419.81x = 15,028,966,869.74
  5. Step 5: Solve for x
    x = 15,028,966,869.74/136,419.81
  6. Step 6: Final answer
    x = 110,167.04

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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.