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Finding the Fourth Proportional to 154,233.58, 212,838.34 and 85,325.59

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Solution

The fourth proportional to 154,233.58, 212,838.34 and 85,325.59 is: 117,747.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,233.58 : 212,838.34 = 85,325.59 : x
  2. Step 2: Convert to fraction form
    154,233.58/212,838.34 = 85,325.59/x
  3. Step 3: Cross multiply
    154,233.58x = 212,838.34 × 85,325.59
  4. Step 4: Simplify right side
    154,233.58x = 18,160,556,189.71
  5. Step 5: Solve for x
    x = 18,160,556,189.71/154,233.58
  6. Step 6: Final answer
    x = 117,747.10

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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.