Home / 129,412.96-194,127.81-40,670.17

Finding the Fourth Proportional to 129,412.96, 194,127.81 and 40,670.17

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Solution

The fourth proportional to 129,412.96, 194,127.81 and 40,670.17 is: 61,007.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,412.96 : 194,127.81 = 40,670.17 : x
  2. Step 2: Convert to fraction form
    129,412.96/194,127.81 = 40,670.17/x
  3. Step 3: Cross multiply
    129,412.96x = 194,127.81 × 40,670.17
  4. Step 4: Simplify right side
    129,412.96x = 7,895,211,034.43
  5. Step 5: Solve for x
    x = 7,895,211,034.43/129,412.96
  6. Step 6: Final answer
    x = 61,007.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.