Home / 209,714.13-289,457.64-129,210.66

Finding the Fourth Proportional to 209,714.13, 289,457.64 and 129,210.66

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Solution

The fourth proportional to 209,714.13, 289,457.64 and 129,210.66 is: 178,342.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,714.13 : 289,457.64 = 129,210.66 : x
  2. Step 2: Convert to fraction form
    209,714.13/289,457.64 = 129,210.66/x
  3. Step 3: Cross multiply
    209,714.13x = 289,457.64 × 129,210.66
  4. Step 4: Simplify right side
    209,714.13x = 37,401,012,706.44
  5. Step 5: Solve for x
    x = 37,401,012,706.44/209,714.13
  6. Step 6: Final answer
    x = 178,342.84

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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.