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Finding the Fourth Proportional to 146,006.40, 201,488.40 and 78,938.40

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Solution

The fourth proportional to 146,006.40, 201,488.40 and 78,938.40 is: 108,934.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,006.40 : 201,488.40 = 78,938.40 : x
  2. Step 2: Convert to fraction form
    146,006.40/201,488.40 = 78,938.40/x
  3. Step 3: Cross multiply
    146,006.40x = 201,488.40 × 78,938.40
  4. Step 4: Simplify right side
    146,006.40x = 15,905,171,914.56
  5. Step 5: Solve for x
    x = 15,905,171,914.56/146,006.40
  6. Step 6: Final answer
    x = 108,934.76

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1.5x scale

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.