Home / 145,933.89-201,388.38-78,865.89

Finding the Fourth Proportional to 145,933.89, 201,388.38 and 78,865.89

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Solution

The fourth proportional to 145,933.89, 201,388.38 and 78,865.89 is: 108,834.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,933.89 : 201,388.38 = 78,865.89 : x
  2. Step 2: Convert to fraction form
    145,933.89/201,388.38 = 78,865.89/x
  3. Step 3: Cross multiply
    145,933.89x = 201,388.38 × 78,865.89
  4. Step 4: Simplify right side
    145,933.89x = 15,882,673,824.36
  5. Step 5: Solve for x
    x = 15,882,673,824.36/145,933.89
  6. Step 6: Final answer
    x = 108,834.72

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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.