Home / 145,136.20-217,416.30-127,817.80

Finding the Fourth Proportional to 145,136.20, 217,416.30 and 127,817.80

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Solution

The fourth proportional to 145,136.20, 217,416.30 and 127,817.80 is: 191,473.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,136.20 : 217,416.30 = 127,817.80 : x
  2. Step 2: Convert to fraction form
    145,136.20/217,416.30 = 127,817.80/x
  3. Step 3: Cross multiply
    145,136.20x = 217,416.30 × 127,817.80
  4. Step 4: Simplify right side
    145,136.20x = 27,789,673,150.14
  5. Step 5: Solve for x
    x = 27,789,673,150.14/145,136.20
  6. Step 6: Final answer
    x = 191,473.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.