Home / 155,396.27-214,465.83-87,416.11

Finding the Fourth Proportional to 155,396.27, 214,465.83 and 87,416.11

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Solution

The fourth proportional to 155,396.27, 214,465.83 and 87,416.11 is: 120,644.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,396.27 : 214,465.83 = 87,416.11 : x
  2. Step 2: Convert to fraction form
    155,396.27/214,465.83 = 87,416.11/x
  3. Step 3: Cross multiply
    155,396.27x = 214,465.83 × 87,416.11
  4. Step 4: Simplify right side
    155,396.27x = 18,747,768,526.79
  5. Step 5: Solve for x
    x = 18,747,768,526.79/155,396.27
  6. Step 6: Final answer
    x = 120,644.90

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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.