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Finding the Fourth Proportional to 100,699.02, 138,953.88 and 58,249.62

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Solution

The fourth proportional to 100,699.02, 138,953.88 and 58,249.62 is: 80,378.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,699.02 : 138,953.88 = 58,249.62 : x
  2. Step 2: Convert to fraction form
    100,699.02/138,953.88 = 58,249.62/x
  3. Step 3: Cross multiply
    100,699.02x = 138,953.88 × 58,249.62
  4. Step 4: Simplify right side
    100,699.02x = 8,094,010,707.53
  5. Step 5: Solve for x
    x = 8,094,010,707.53/100,699.02
  6. Step 6: Final answer
    x = 80,378.25

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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.