Home / 217,111.86-299,633.04-121,638.24

Finding the Fourth Proportional to 217,111.86, 299,633.04 and 121,638.24

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Solution

The fourth proportional to 217,111.86, 299,633.04 and 121,638.24 is: 167,871.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,111.86 : 299,633.04 = 121,638.24 : x
  2. Step 2: Convert to fraction form
    217,111.86/299,633.04 = 121,638.24/x
  3. Step 3: Cross multiply
    217,111.86x = 299,633.04 × 121,638.24
  4. Step 4: Simplify right side
    217,111.86x = 36,446,835,631.45
  5. Step 5: Solve for x
    x = 36,446,835,631.45/217,111.86
  6. Step 6: Final answer
    x = 167,871.23

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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.