Home / 217,325.81-299,909.43-121,832.51

Finding the Fourth Proportional to 217,325.81, 299,909.43 and 121,832.51

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Solution

The fourth proportional to 217,325.81, 299,909.43 and 121,832.51 is: 168,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,325.81 : 299,909.43 = 121,832.51 : x
  2. Step 2: Convert to fraction form
    217,325.81/299,909.43 = 121,832.51/x
  3. Step 3: Cross multiply
    217,325.81x = 299,909.43 × 121,832.51
  4. Step 4: Simplify right side
    217,325.81x = 36,538,717,130.02
  5. Step 5: Solve for x
    x = 36,538,717,130.02/217,325.81
  6. Step 6: Final answer
    x = 168,128.76

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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.