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Finding the Fourth Proportional to 111,144.76, 153,380.99 and 63,400.93

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Solution

The fourth proportional to 111,144.76, 153,380.99 and 63,400.93 is: 87,493.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,144.76 : 153,380.99 = 63,400.93 : x
  2. Step 2: Convert to fraction form
    111,144.76/153,380.99 = 63,400.93/x
  3. Step 3: Cross multiply
    111,144.76x = 153,380.99 × 63,400.93
  4. Step 4: Simplify right side
    111,144.76x = 9,724,497,410.32
  5. Step 5: Solve for x
    x = 9,724,497,410.32/111,144.76
  6. Step 6: Final answer
    x = 87,493.98

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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.