Home / 91,328.03-136,992.29-28,146.11

Finding the Fourth Proportional to 91,328.03, 136,992.29 and 28,146.11

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Solution

The fourth proportional to 91,328.03, 136,992.29 and 28,146.11 is: 42,219.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,328.03 : 136,992.29 = 28,146.11 : x
  2. Step 2: Convert to fraction form
    91,328.03/136,992.29 = 28,146.11/x
  3. Step 3: Cross multiply
    91,328.03x = 136,992.29 × 28,146.11
  4. Step 4: Simplify right side
    91,328.03x = 3,855,799,237.80
  5. Step 5: Solve for x
    x = 3,855,799,237.80/91,328.03
  6. Step 6: Final answer
    x = 42,219.23

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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.