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Finding the Fourth Proportional to 145,775.21, 218,693.50 and 82,625.59

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Solution

The fourth proportional to 145,775.21, 218,693.50 and 82,625.59 is: 123,955.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,775.21 : 218,693.50 = 82,625.59 : x
  2. Step 2: Convert to fraction form
    145,775.21/218,693.50 = 82,625.59/x
  3. Step 3: Cross multiply
    145,775.21x = 218,693.50 × 82,625.59
  4. Step 4: Simplify right side
    145,775.21x = 18,069,679,466.67
  5. Step 5: Solve for x
    x = 18,069,679,466.67/145,775.21
  6. Step 6: Final answer
    x = 123,955.78

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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.