Home / 154,219.32-212,758.26-103,830.84

Finding the Fourth Proportional to 154,219.32, 212,758.26 and 103,830.84

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Solution

The fourth proportional to 154,219.32, 212,758.26 and 103,830.84 is: 143,243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,219.32 : 212,758.26 = 103,830.84 : x
  2. Step 2: Convert to fraction form
    154,219.32/212,758.26 = 103,830.84/x
  3. Step 3: Cross multiply
    154,219.32x = 212,758.26 × 103,830.84
  4. Step 4: Simplify right side
    154,219.32x = 22,090,868,852.74
  5. Step 5: Solve for x
    x = 22,090,868,852.74/154,219.32
  6. Step 6: Final answer
    x = 143,243.20

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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.