Home / 145,744.40-201,035.28-100,343.56

Finding the Fourth Proportional to 145,744.40, 201,035.28 and 100,343.56

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Solution

The fourth proportional to 145,744.40, 201,035.28 and 100,343.56 is: 138,410.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,744.40 : 201,035.28 = 100,343.56 : x
  2. Step 2: Convert to fraction form
    145,744.40/201,035.28 = 100,343.56/x
  3. Step 3: Cross multiply
    145,744.40x = 201,035.28 × 100,343.56
  4. Step 4: Simplify right side
    145,744.40x = 20,172,595,680.80
  5. Step 5: Solve for x
    x = 20,172,595,680.80/145,744.40
  6. Step 6: Final answer
    x = 138,410.78

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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.