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Finding the Fourth Proportional to 100,059.90, 138,101.13 and 64,294.62

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Solution

The fourth proportional to 100,059.90, 138,101.13 and 64,294.62 is: 88,738.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,059.90 : 138,101.13 = 64,294.62 : x
  2. Step 2: Convert to fraction form
    100,059.90/138,101.13 = 64,294.62/x
  3. Step 3: Cross multiply
    100,059.90x = 138,101.13 × 64,294.62
  4. Step 4: Simplify right side
    100,059.90x = 8,879,159,674.92
  5. Step 5: Solve for x
    x = 8,879,159,674.92/100,059.90
  6. Step 6: Final answer
    x = 88,738.44

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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.