Home / 217,122.63-299,629.02-121,630.01

Finding the Fourth Proportional to 217,122.63, 299,629.02 and 121,630.01

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Solution

The fourth proportional to 217,122.63, 299,629.02 and 121,630.01 is: 167,849.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,122.63 : 299,629.02 = 121,630.01 : x
  2. Step 2: Convert to fraction form
    217,122.63/299,629.02 = 121,630.01/x
  3. Step 3: Cross multiply
    217,122.63x = 299,629.02 × 121,630.01
  4. Step 4: Simplify right side
    217,122.63x = 36,443,879,656.86
  5. Step 5: Solve for x
    x = 36,443,879,656.86/217,122.63
  6. Step 6: Final answer
    x = 167,849.29

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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.