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Finding the Fourth Proportional to 111,980.89, 154,507.12 and 63,572.32

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Solution

The fourth proportional to 111,980.89, 154,507.12 and 63,572.32 is: 87,714.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,980.89 : 154,507.12 = 63,572.32 : x
  2. Step 2: Convert to fraction form
    111,980.89/154,507.12 = 63,572.32/x
  3. Step 3: Cross multiply
    111,980.89x = 154,507.12 × 63,572.32
  4. Step 4: Simplify right side
    111,980.89x = 9,822,376,074.92
  5. Step 5: Solve for x
    x = 9,822,376,074.92/111,980.89
  6. Step 6: Final answer
    x = 87,714.75

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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.