Home / 115,421.33-159,277.29-72,423.97

Finding the Fourth Proportional to 115,421.33, 159,277.29 and 72,423.97

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Solution

The fourth proportional to 115,421.33, 159,277.29 and 72,423.97 is: 99,942.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,421.33 : 159,277.29 = 72,423.97 : x
  2. Step 2: Convert to fraction form
    115,421.33/159,277.29 = 72,423.97/x
  3. Step 3: Cross multiply
    115,421.33x = 159,277.29 × 72,423.97
  4. Step 4: Simplify right side
    115,421.33x = 11,535,493,898.79
  5. Step 5: Solve for x
    x = 11,535,493,898.79/115,421.33
  6. Step 6: Final answer
    x = 99,942.48

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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.