Home / 105,711.87-158,256.77-70,564.35

Finding the Fourth Proportional to 105,711.87, 158,256.77 and 70,564.35

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Solution

The fourth proportional to 105,711.87, 158,256.77 and 70,564.35 is: 105,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,711.87 : 158,256.77 = 70,564.35 : x
  2. Step 2: Convert to fraction form
    105,711.87/158,256.77 = 70,564.35/x
  3. Step 3: Cross multiply
    105,711.87x = 158,256.77 × 70,564.35
  4. Step 4: Simplify right side
    105,711.87x = 11,167,285,755.33
  5. Step 5: Solve for x
    x = 11,167,285,755.33/105,711.87
  6. Step 6: Final answer
    x = 105,638.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.