Home / 115,423.48-159,288.54-67,021.78

Finding the Fourth Proportional to 115,423.48, 159,288.54 and 67,021.78

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Solution

The fourth proportional to 115,423.48, 159,288.54 and 67,021.78 is: 92,492.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,423.48 : 159,288.54 = 67,021.78 : x
  2. Step 2: Convert to fraction form
    115,423.48/159,288.54 = 67,021.78/x
  3. Step 3: Cross multiply
    115,423.48x = 159,288.54 × 67,021.78
  4. Step 4: Simplify right side
    115,423.48x = 10,675,801,484.40
  5. Step 5: Solve for x
    x = 10,675,801,484.40/115,423.48
  6. Step 6: Final answer
    x = 92,492.46

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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.