Home / 266,972.10-400,445.64-77,426.70

Finding the Fourth Proportional to 266,972.10, 400,445.64 and 77,426.70

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Solution

The fourth proportional to 266,972.10, 400,445.64 and 77,426.70 is: 116,136.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,972.10 : 400,445.64 = 77,426.70 : x
  2. Step 2: Convert to fraction form
    266,972.10/400,445.64 = 77,426.70/x
  3. Step 3: Cross multiply
    266,972.10x = 400,445.64 × 77,426.70
  4. Step 4: Simplify right side
    266,972.10x = 31,005,184,434.59
  5. Step 5: Solve for x
    x = 31,005,184,434.59/266,972.10
  6. Step 6: Final answer
    x = 116,136.42

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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.