Home / 155,770.14-214,967.25-86,861.19

Finding the Fourth Proportional to 155,770.14, 214,967.25 and 86,861.19

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Solution

The fourth proportional to 155,770.14, 214,967.25 and 86,861.19 is: 119,870.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,770.14 : 214,967.25 = 86,861.19 : x
  2. Step 2: Convert to fraction form
    155,770.14/214,967.25 = 86,861.19/x
  3. Step 3: Cross multiply
    155,770.14x = 214,967.25 × 86,861.19
  4. Step 4: Simplify right side
    155,770.14x = 18,672,311,146.03
  5. Step 5: Solve for x
    x = 18,672,311,146.03/155,770.14
  6. Step 6: Final answer
    x = 119,870.93

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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.