Home / 154,220.32-212,759.64-103,831.84

Finding the Fourth Proportional to 154,220.32, 212,759.64 and 103,831.84

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Solution

The fourth proportional to 154,220.32, 212,759.64 and 103,831.84 is: 143,244.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,220.32 : 212,759.64 = 103,831.84 : x
  2. Step 2: Convert to fraction form
    154,220.32/212,759.64 = 103,831.84/x
  3. Step 3: Cross multiply
    154,220.32x = 212,759.64 × 103,831.84
  4. Step 4: Simplify right side
    154,220.32x = 22,091,224,898.94
  5. Step 5: Solve for x
    x = 22,091,224,898.94/154,220.32
  6. Step 6: Final answer
    x = 143,244.58

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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.