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Finding the Fourth Proportional to 154,280.68, 213,000.24 and 100,658.68

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Solution

The fourth proportional to 154,280.68, 213,000.24 and 100,658.68 is: 138,969.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,280.68 : 213,000.24 = 100,658.68 : x
  2. Step 2: Convert to fraction form
    154,280.68/213,000.24 = 100,658.68/x
  3. Step 3: Cross multiply
    154,280.68x = 213,000.24 × 100,658.68
  4. Step 4: Simplify right side
    154,280.68x = 21,440,322,998.08
  5. Step 5: Solve for x
    x = 21,440,322,998.08/154,280.68
  6. Step 6: Final answer
    x = 138,969.59

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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.