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Finding the Fourth Proportional to 100,006.85, 138,099.13 and 93,031.64

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Solution

The fourth proportional to 100,006.85, 138,099.13 and 93,031.64 is: 128,467.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,006.85 : 138,099.13 = 93,031.64 : x
  2. Step 2: Convert to fraction form
    100,006.85/138,099.13 = 93,031.64/x
  3. Step 3: Cross multiply
    100,006.85x = 138,099.13 × 93,031.64
  4. Step 4: Simplify right side
    100,006.85x = 12,847,588,141.27
  5. Step 5: Solve for x
    x = 12,847,588,141.27/100,006.85
  6. Step 6: Final answer
    x = 128,467.08

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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.