Home / 105,186.87-145,156.46-57,442.23

Finding the Fourth Proportional to 105,186.87, 145,156.46 and 57,442.23

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Solution

The fourth proportional to 105,186.87, 145,156.46 and 57,442.23 is: 79,269.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,186.87 : 145,156.46 = 57,442.23 : x
  2. Step 2: Convert to fraction form
    105,186.87/145,156.46 = 57,442.23/x
  3. Step 3: Cross multiply
    105,186.87x = 145,156.46 × 57,442.23
  4. Step 4: Simplify right side
    105,186.87x = 8,338,110,474.09
  5. Step 5: Solve for x
    x = 8,338,110,474.09/105,186.87
  6. Step 6: Final answer
    x = 79,269.50

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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.