Home / 105,720.90-158,270.22-70,573.38

Finding the Fourth Proportional to 105,720.90, 158,270.22 and 70,573.38

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Solution

The fourth proportional to 105,720.90, 158,270.22 and 70,573.38 is: 105,652.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,720.90 : 158,270.22 = 70,573.38 : x
  2. Step 2: Convert to fraction form
    105,720.90/158,270.22 = 70,573.38/x
  3. Step 3: Cross multiply
    105,720.90x = 158,270.22 × 70,573.38
  4. Step 4: Simplify right side
    105,720.90x = 11,169,664,378.74
  5. Step 5: Solve for x
    x = 11,169,664,378.74/105,720.90
  6. Step 6: Final answer
    x = 105,652.38

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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.