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Finding the Fourth Proportional to 100,849.80, 151,128.90 and 44,643.90

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Solution

The fourth proportional to 100,849.80, 151,128.90 and 44,643.90 is: 66,901.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,849.80 : 151,128.90 = 44,643.90 : x
  2. Step 2: Convert to fraction form
    100,849.80/151,128.90 = 44,643.90/x
  3. Step 3: Cross multiply
    100,849.80x = 151,128.90 × 44,643.90
  4. Step 4: Simplify right side
    100,849.80x = 6,746,983,498.71
  5. Step 5: Solve for x
    x = 6,746,983,498.71/100,849.80
  6. Step 6: Final answer
    x = 66,901.31

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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.