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Finding the Fourth Proportional to 129,597.84, 178,855.92 and 73,020.12

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Solution

The fourth proportional to 129,597.84, 178,855.92 and 73,020.12 is: 100,773.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,597.84 : 178,855.92 = 73,020.12 : x
  2. Step 2: Convert to fraction form
    129,597.84/178,855.92 = 73,020.12/x
  3. Step 3: Cross multiply
    129,597.84x = 178,855.92 × 73,020.12
  4. Step 4: Simplify right side
    129,597.84x = 13,060,080,741.11
  5. Step 5: Solve for x
    x = 13,060,080,741.11/129,597.84
  6. Step 6: Final answer
    x = 100,773.91

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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.