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Finding the Fourth Proportional to 112,907.70, 155,832.93 and 65,154.42

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Solution

The fourth proportional to 112,907.70, 155,832.93 and 65,154.42 is: 89,924.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,907.70 : 155,832.93 = 65,154.42 : x
  2. Step 2: Convert to fraction form
    112,907.70/155,832.93 = 65,154.42/x
  3. Step 3: Cross multiply
    112,907.70x = 155,832.93 × 65,154.42
  4. Step 4: Simplify right side
    112,907.70x = 10,153,204,171.05
  5. Step 5: Solve for x
    x = 10,153,204,171.05/112,907.70
  6. Step 6: Final answer
    x = 89,924.82

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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.