Home / 147,484.48-220,915.68-100,128.64

Finding the Fourth Proportional to 147,484.48, 220,915.68 and 100,128.64

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Solution

The fourth proportional to 147,484.48, 220,915.68 and 100,128.64 is: 149,981.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,484.48 : 220,915.68 = 100,128.64 : x
  2. Step 2: Convert to fraction form
    147,484.48/220,915.68 = 100,128.64/x
  3. Step 3: Cross multiply
    147,484.48x = 220,915.68 × 100,128.64
  4. Step 4: Simplify right side
    147,484.48x = 22,119,986,593.08
  5. Step 5: Solve for x
    x = 22,119,986,593.08/147,484.48
  6. Step 6: Final answer
    x = 149,981.79

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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.