Home / 120,812.95-166,716.47-72,441.57

Finding the Fourth Proportional to 120,812.95, 166,716.47 and 72,441.57

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Solution

The fourth proportional to 120,812.95, 166,716.47 and 72,441.57 is: 99,966.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,812.95 : 166,716.47 = 72,441.57 : x
  2. Step 2: Convert to fraction form
    120,812.95/166,716.47 = 72,441.57/x
  3. Step 3: Cross multiply
    120,812.95x = 166,716.47 × 72,441.57
  4. Step 4: Simplify right side
    120,812.95x = 12,077,202,831.66
  5. Step 5: Solve for x
    x = 12,077,202,831.66/120,812.95
  6. Step 6: Final answer
    x = 99,966.13

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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.