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Finding the Fourth Proportional to 100,070.10, 150,123.34 and 47,479.09

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Solution

The fourth proportional to 100,070.10, 150,123.34 and 47,479.09 is: 71,227.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,070.10 : 150,123.34 = 47,479.09 : x
  2. Step 2: Convert to fraction form
    100,070.10/150,123.34 = 47,479.09/x
  3. Step 3: Cross multiply
    100,070.10x = 150,123.34 × 47,479.09
  4. Step 4: Simplify right side
    100,070.10x = 7,127,719,570.96
  5. Step 5: Solve for x
    x = 7,127,719,570.96/100,070.10
  6. Step 6: Final answer
    x = 71,227.27

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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.