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Finding the Fourth Proportional to 102,903.33, 141,962.11 and 72,714.53

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Solution

The fourth proportional to 102,903.33, 141,962.11 and 72,714.53 is: 100,314.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,903.33 : 141,962.11 = 72,714.53 : x
  2. Step 2: Convert to fraction form
    102,903.33/141,962.11 = 72,714.53/x
  3. Step 3: Cross multiply
    102,903.33x = 141,962.11 × 72,714.53
  4. Step 4: Simplify right side
    102,903.33x = 10,322,707,396.65
  5. Step 5: Solve for x
    x = 10,322,707,396.65/102,903.33
  6. Step 6: Final answer
    x = 100,314.61

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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.