Home / 223,108.65-307,888.21-121,132.11

Finding the Fourth Proportional to 223,108.65, 307,888.21 and 121,132.11

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Solution

The fourth proportional to 223,108.65, 307,888.21 and 121,132.11 is: 167,161.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,108.65 : 307,888.21 = 121,132.11 : x
  2. Step 2: Convert to fraction form
    223,108.65/307,888.21 = 121,132.11/x
  3. Step 3: Cross multiply
    223,108.65x = 307,888.21 × 121,132.11
  4. Step 4: Simplify right side
    223,108.65x = 37,295,148,521.42
  5. Step 5: Solve for x
    x = 37,295,148,521.42/223,108.65
  6. Step 6: Final answer
    x = 167,161.37

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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.