Home / 99,970.12-137,958.90-57,527.80

Finding the Fourth Proportional to 99,970.12, 137,958.90 and 57,527.80

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Solution

The fourth proportional to 99,970.12, 137,958.90 and 57,527.80 is: 79,388.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,970.12 : 137,958.90 = 57,527.80 : x
  2. Step 2: Convert to fraction form
    99,970.12/137,958.90 = 57,527.80/x
  3. Step 3: Cross multiply
    99,970.12x = 137,958.90 × 57,527.80
  4. Step 4: Simplify right side
    99,970.12x = 7,936,472,007.42
  5. Step 5: Solve for x
    x = 7,936,472,007.42/99,970.12
  6. Step 6: Final answer
    x = 79,388.44

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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.