Home / 220,128.72-330,006.54-87,102.81

Finding the Fourth Proportional to 220,128.72, 330,006.54 and 87,102.81

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Solution

The fourth proportional to 220,128.72, 330,006.54 and 87,102.81 is: 130,580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,128.72 : 330,006.54 = 87,102.81 : x
  2. Step 2: Convert to fraction form
    220,128.72/330,006.54 = 87,102.81/x
  3. Step 3: Cross multiply
    220,128.72x = 330,006.54 × 87,102.81
  4. Step 4: Simplify right side
    220,128.72x = 28,744,496,952.38
  5. Step 5: Solve for x
    x = 28,744,496,952.38/220,128.72
  6. Step 6: Final answer
    x = 130,580.40

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1.5x scale

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.