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Finding the Fourth Proportional to 112,574.72, 155,285.42 and 74,334.62

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Solution

The fourth proportional to 112,574.72, 155,285.42 and 74,334.62 is: 102,537.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,574.72 : 155,285.42 = 74,334.62 : x
  2. Step 2: Convert to fraction form
    112,574.72/155,285.42 = 74,334.62/x
  3. Step 3: Cross multiply
    112,574.72x = 155,285.42 × 74,334.62
  4. Step 4: Simplify right side
    112,574.72x = 11,543,082,687.24
  5. Step 5: Solve for x
    x = 11,543,082,687.24/112,574.72
  6. Step 6: Final answer
    x = 102,537.08

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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.