Home / 131,151.16-180,982.20-74,561.32

Finding the Fourth Proportional to 131,151.16, 180,982.20 and 74,561.32

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Solution

The fourth proportional to 131,151.16, 180,982.20 and 74,561.32 is: 102,890.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,151.16 : 180,982.20 = 74,561.32 : x
  2. Step 2: Convert to fraction form
    131,151.16/180,982.20 = 74,561.32/x
  3. Step 3: Cross multiply
    131,151.16x = 180,982.20 × 74,561.32
  4. Step 4: Simplify right side
    131,151.16x = 13,494,271,728.50
  5. Step 5: Solve for x
    x = 13,494,271,728.50/131,151.16
  6. Step 6: Final answer
    x = 102,890.98

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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.