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Finding the Fourth Proportional to 102,576.20, 153,777.90 and 53,328.20

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Solution

The fourth proportional to 102,576.20, 153,777.90 and 53,328.20 is: 79,947.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,576.20 : 153,777.90 = 53,328.20 : x
  2. Step 2: Convert to fraction form
    102,576.20/153,777.90 = 53,328.20/x
  3. Step 3: Cross multiply
    102,576.20x = 153,777.90 × 53,328.20
  4. Step 4: Simplify right side
    102,576.20x = 8,200,698,606.78
  5. Step 5: Solve for x
    x = 8,200,698,606.78/102,576.20
  6. Step 6: Final answer
    x = 79,947.38

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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.