Home / 131,068.47-180,872.32-72,922.96

Finding the Fourth Proportional to 131,068.47, 180,872.32 and 72,922.96

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Solution

The fourth proportional to 131,068.47, 180,872.32 and 72,922.96 is: 100,632.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,068.47 : 180,872.32 = 72,922.96 : x
  2. Step 2: Convert to fraction form
    131,068.47/180,872.32 = 72,922.96/x
  3. Step 3: Cross multiply
    131,068.47x = 180,872.32 × 72,922.96
  4. Step 4: Simplify right side
    131,068.47x = 13,189,744,956.47
  5. Step 5: Solve for x
    x = 13,189,744,956.47/131,068.47
  6. Step 6: Final answer
    x = 100,632.48

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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.