Home / 149,831.29-206,758.88-81,834.72

Finding the Fourth Proportional to 149,831.29, 206,758.88 and 81,834.72

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Solution

The fourth proportional to 149,831.29, 206,758.88 and 81,834.72 is: 112,927.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,831.29 : 206,758.88 = 81,834.72 : x
  2. Step 2: Convert to fraction form
    149,831.29/206,758.88 = 81,834.72/x
  3. Step 3: Cross multiply
    149,831.29x = 206,758.88 × 81,834.72
  4. Step 4: Simplify right side
    149,831.29x = 16,920,054,643.14
  5. Step 5: Solve for x
    x = 16,920,054,643.14/149,831.29
  6. Step 6: Final answer
    x = 112,927.38

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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.