Home / 131,440.95-181,389.66-74,069.28

Finding the Fourth Proportional to 131,440.95, 181,389.66 and 74,069.28

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Solution

The fourth proportional to 131,440.95, 181,389.66 and 74,069.28 is: 102,216.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,440.95 : 181,389.66 = 74,069.28 : x
  2. Step 2: Convert to fraction form
    131,440.95/181,389.66 = 74,069.28/x
  3. Step 3: Cross multiply
    131,440.95x = 181,389.66 × 74,069.28
  4. Step 4: Simplify right side
    131,440.95x = 13,435,401,515.64
  5. Step 5: Solve for x
    x = 13,435,401,515.64/131,440.95
  6. Step 6: Final answer
    x = 102,216.25

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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.