Home / 105,990.74-158,987.02-31,112.12

Finding the Fourth Proportional to 105,990.74, 158,987.02 and 31,112.12

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Solution

The fourth proportional to 105,990.74, 158,987.02 and 31,112.12 is: 46,668.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,990.74 : 158,987.02 = 31,112.12 : x
  2. Step 2: Convert to fraction form
    105,990.74/158,987.02 = 31,112.12/x
  3. Step 3: Cross multiply
    105,990.74x = 158,987.02 × 31,112.12
  4. Step 4: Simplify right side
    105,990.74x = 4,946,423,244.68
  5. Step 5: Solve for x
    x = 4,946,423,244.68/105,990.74
  6. Step 6: Final answer
    x = 46,668.45

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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.