Home / 120,457.13-180,555.21-53,805.47

Finding the Fourth Proportional to 120,457.13, 180,555.21 and 53,805.47

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Solution

The fourth proportional to 120,457.13, 180,555.21 and 53,805.47 is: 80,649.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,457.13 : 180,555.21 = 53,805.47 : x
  2. Step 2: Convert to fraction form
    120,457.13/180,555.21 = 53,805.47/x
  3. Step 3: Cross multiply
    120,457.13x = 180,555.21 × 53,805.47
  4. Step 4: Simplify right side
    120,457.13x = 9,714,857,032.22
  5. Step 5: Solve for x
    x = 9,714,857,032.22/120,457.13
  6. Step 6: Final answer
    x = 80,649.92

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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.