Home / 105,131.03-145,084.25-57,386.93

Finding the Fourth Proportional to 105,131.03, 145,084.25 and 57,386.93

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Solution

The fourth proportional to 105,131.03, 145,084.25 and 57,386.93 is: 79,195.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,131.03 : 145,084.25 = 57,386.93 : x
  2. Step 2: Convert to fraction form
    105,131.03/145,084.25 = 57,386.93/x
  3. Step 3: Cross multiply
    105,131.03x = 145,084.25 × 57,386.93
  4. Step 4: Simplify right side
    105,131.03x = 8,325,939,116.90
  5. Step 5: Solve for x
    x = 8,325,939,116.90/105,131.03
  6. Step 6: Final answer
    x = 79,195.83

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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.