Home / 420,127.56-630,190.13-180,085.68

Finding the Fourth Proportional to 420,127.56, 630,190.13 and 180,085.68

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Solution

The fourth proportional to 420,127.56, 630,190.13 and 180,085.68 is: 270,128.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,127.56 : 630,190.13 = 180,085.68 : x
  2. Step 2: Convert to fraction form
    420,127.56/630,190.13 = 180,085.68/x
  3. Step 3: Cross multiply
    420,127.56x = 630,190.13 × 180,085.68
  4. Step 4: Simplify right side
    420,127.56x = 113,488,217,189.91
  5. Step 5: Solve for x
    x = 113,488,217,189.91/420,127.56
  6. Step 6: Final answer
    x = 270,128.00

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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.