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Finding the Fourth Proportional to 144,869.70, 217,045.35 and 89,400.90

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Solution

The fourth proportional to 144,869.70, 217,045.35 and 89,400.90 is: 133,941.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,869.70 : 217,045.35 = 89,400.90 : x
  2. Step 2: Convert to fraction form
    144,869.70/217,045.35 = 89,400.90/x
  3. Step 3: Cross multiply
    144,869.70x = 217,045.35 × 89,400.90
  4. Step 4: Simplify right side
    144,869.70x = 19,404,049,630.82
  5. Step 5: Solve for x
    x = 19,404,049,630.82/144,869.70
  6. Step 6: Final answer
    x = 133,941.39

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1.5x scale

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.