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Finding the Fourth Proportional to 145,805.14, 218,736.87 and 45,980.74

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Solution

The fourth proportional to 145,805.14, 218,736.87 and 45,980.74 is: 68,980.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,805.14 : 218,736.87 = 45,980.74 : x
  2. Step 2: Convert to fraction form
    145,805.14/218,736.87 = 45,980.74/x
  3. Step 3: Cross multiply
    145,805.14x = 218,736.87 × 45,980.74
  4. Step 4: Simplify right side
    145,805.14x = 10,057,683,147.88
  5. Step 5: Solve for x
    x = 10,057,683,147.88/145,805.14
  6. Step 6: Final answer
    x = 68,980.31

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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.