Home / 154,346.34-212,934.90-100,611.75

Finding the Fourth Proportional to 154,346.34, 212,934.90 and 100,611.75

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Solution

The fourth proportional to 154,346.34, 212,934.90 and 100,611.75 is: 138,803.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,346.34 : 212,934.90 = 100,611.75 : x
  2. Step 2: Convert to fraction form
    154,346.34/212,934.90 = 100,611.75/x
  3. Step 3: Cross multiply
    154,346.34x = 212,934.90 × 100,611.75
  4. Step 4: Simplify right side
    154,346.34x = 21,423,752,925.08
  5. Step 5: Solve for x
    x = 21,423,752,925.08/154,346.34
  6. Step 6: Final answer
    x = 138,803.12

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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.