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Finding the Fourth Proportional to 145,816.87, 201,227.24 and 78,748.87

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Solution

The fourth proportional to 145,816.87, 201,227.24 and 78,748.87 is: 108,673.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,816.87 : 201,227.24 = 78,748.87 : x
  2. Step 2: Convert to fraction form
    145,816.87/201,227.24 = 78,748.87/x
  3. Step 3: Cross multiply
    145,816.87x = 201,227.24 × 78,748.87
  4. Step 4: Simplify right side
    145,816.87x = 15,846,417,369.47
  5. Step 5: Solve for x
    x = 15,846,417,369.47/145,816.87
  6. Step 6: Final answer
    x = 108,673.42

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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.