Home / 151,628.13-209,113.89-121,402.43

Finding the Fourth Proportional to 151,628.13, 209,113.89 and 121,402.43

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Solution

The fourth proportional to 151,628.13, 209,113.89 and 121,402.43 is: 167,428.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,628.13 : 209,113.89 = 121,402.43 : x
  2. Step 2: Convert to fraction form
    151,628.13/209,113.89 = 121,402.43/x
  3. Step 3: Cross multiply
    151,628.13x = 209,113.89 × 121,402.43
  4. Step 4: Simplify right side
    151,628.13x = 25,386,933,676.10
  5. Step 5: Solve for x
    x = 25,386,933,676.10/151,628.13
  6. Step 6: Final answer
    x = 167,428.92

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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.