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Finding the Fourth Proportional to 145,759.69, 218,756.15 and 75,659.05

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Solution

The fourth proportional to 145,759.69, 218,756.15 and 75,659.05 is: 113,549.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,759.69 : 218,756.15 = 75,659.05 : x
  2. Step 2: Convert to fraction form
    145,759.69/218,756.15 = 75,659.05/x
  3. Step 3: Cross multiply
    145,759.69x = 218,756.15 × 75,659.05
  4. Step 4: Simplify right side
    145,759.69x = 16,550,882,490.66
  5. Step 5: Solve for x
    x = 16,550,882,490.66/145,759.69
  6. Step 6: Final answer
    x = 113,549.11

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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.