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Finding the Fourth Proportional to 125,803, 173,609.76 and 69,213.16

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Solution

The fourth proportional to 125,803, 173,609.76 and 69,213.16 is: 95,515.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,803 : 173,609.76 = 69,213.16 : x
  2. Step 2: Convert to fraction form
    125,803/173,609.76 = 69,213.16/x
  3. Step 3: Cross multiply
    125,803x = 173,609.76 × 69,213.16
  4. Step 4: Simplify right side
    125,803x = 12,016,080,096.44
  5. Step 5: Solve for x
    x = 12,016,080,096.44/125,803
  6. Step 6: Final answer
    x = 95,515.05

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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.