Home / 279,118.70-418,679.27-89,607.86

Finding the Fourth Proportional to 279,118.70, 418,679.27 and 89,607.86

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Solution

The fourth proportional to 279,118.70, 418,679.27 and 89,607.86 is: 134,412.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,118.70 : 418,679.27 = 89,607.86 : x
  2. Step 2: Convert to fraction form
    279,118.70/418,679.27 = 89,607.86/x
  3. Step 3: Cross multiply
    279,118.70x = 418,679.27 × 89,607.86
  4. Step 4: Simplify right side
    279,118.70x = 37,516,950,869.63
  5. Step 5: Solve for x
    x = 37,516,950,869.63/279,118.70
  6. Step 6: Final answer
    x = 134,412.17

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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.