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Finding the Fourth Proportional to 154,060.52, 212,582.50 and 86,069.16

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Solution

The fourth proportional to 154,060.52, 212,582.50 and 86,069.16 is: 118,763.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,060.52 : 212,582.50 = 86,069.16 : x
  2. Step 2: Convert to fraction form
    154,060.52/212,582.50 = 86,069.16/x
  3. Step 3: Cross multiply
    154,060.52x = 212,582.50 × 86,069.16
  4. Step 4: Simplify right side
    154,060.52x = 18,296,797,205.70
  5. Step 5: Solve for x
    x = 18,296,797,205.70/154,060.52
  6. Step 6: Final answer
    x = 118,763.70

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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.